The range of the equation y = x² + 2x -5 where -3 ≤ x ≤ 3 is [-3,10]
The function is y = x² + 2x -5
Domain of x is [-3,3]
By putting the value of x = -3
y = (-3)² + 2(-3) - 5
y = 9 - 6 -5
y = -2
Minimum possible value is -2
And by putting the value of x = 3
y = 3² + 2(3) -5
y = 9 + 6 -5
y = 10
Maximum possible value is 10
The value of y ranges between -2 ≤ y ≤ 10
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The question is incomplete the complete question is :
If y = = x² + 2x -5 for -3 ≤ x ≤ 3 then what will be the range of y ?
How long does it take time a car to move 150 centimeters? we all have a good idea that if it takes a smaller period of time to move 50 centimeters? the car must be moving faster. But how do we measure the space of a toy car in your own car, its is easy because engineers have designed a speedometer that automatically tells you how fast your car is moving.
If you record the time it takes for the car to move 50 centimeters and then record the time it takes to move 150 centimeter, will there be a difference in the speed of the car between the tow runs? Explain your prediction
There may be a difference on speed based on various factors
How to determine speedThough it would be reasonable to conclude that if it takes less time for a car to move 50 centimeters than 150 centimeters, they must be traveling faster; we do not know exactly when they did this and whether their speed changed accordingly.
Furthermore, it could have taken the same time covering both distances; thus leaving unanswered questions regarding their relative speeds.
Due to variables affecting car speed such as changes in terrain or obstacles in its path, we cannot accurately predict its speed without more information regarding these two runs.
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Please help me! It's due today!
Answer:
i think it would be...5^-5, 5^0, 5^4
Step-by-step explanation:
pls mark brainliest
What is the given function below in vertex form
On Friday, Jacob planted a pinto bean in science class. When he returned to school on Monday, the bean had sprouted a stem that was 3 millimeters long. At the end of the week, Jacob's bean sprout had a stem that was 42 millimeters long. How many centimeters did Jacob's bean sprout grow during the week?
Jacob's bean sprout grew 3.9 centimeters during the week.
What is measurements?
Measurements in math involve the assignment of numerical values to physical quantities, such as length, area, volume, mass, time, temperature, and so on. Measuring objects or events allows us to compare and quantify them, and is an essential part of mathematical problem-solving, as well as many other fields of study
Jacob's bean sprout grew 42 millimeters - 3 millimeters = 39 millimeters during the week.
To convert millimeters to centimeters, we need to divide by 10 since there are 10 millimeters in 1 centimeter.
So, the growth in centimeters is 39 millimeters ÷ 10 = 3.9 centimeters.
Therefore, Jacob's bean sprout grew 3.9 centimeters during the week.
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If (x+1/x)² = 3, find x³+1/x³.
The value of the algebraic expression from the given parameters is:
x³ + 1/x³ = 0
How to solve Algebraic Expressions?The given problem is simply based on the expansion.
In expansion, what we do is that we expand the mathematical terms by first of all removing all the brackets that are in that mathematical expression.
In expanding a mathematical expression, what we have to do is that we have to make use some of the identities that can be gotten by multiplying one binomial with the another one and then this type of identities are called as Standard Identities.
For example:
(x + a)(x + b) = x² + (a + b)x + ab
Thus:
(x + 1/x)² = 3
x + 1/x = √3
(x+1/x)³ = x³ + (1/x)³ + 3(x)(1/x) (x + 1/x)
√3³ = x³ + 1/x³ + 3(√3)
x³ + 1/x³ = 3√3 - 3√3
x³ + 1/x³ = 0
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The green parallelogram is a dilation of the black parallelogram. What is the scale factor of the dilation?
A) 1/3
B) 1/2
C) 2
To determine the scale factor of the dilation between the green parallelogram and the black parallelogram, you would need to compare the corresponding side lengths of the two parallelograms. For example, if the green parallelogram has a side length that is half of the black parallelogram's side length, the scale factor would be 1/2 (Option B).
If the green parallelogram's side length is twice the black parallelogram's side length, the scale factor would be 2 (Option C). And if the green parallelogram's side length is one-third of the black parallelogram's side length, the scale factor would be 1/3 (Option A). Without specific measurements or a visual representation, it is not possible to accurately identify the scale factor between the two parallelograms. Please provide the side lengths or a diagram to help determine the correct scale factor.
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Kevin has three classes in a row. Eight classes two hours long. Kevin’s first class is at seven. When will Karen’s last class and?
Karen's last class will end at three in the afternoon.
At what time will Karen’s final class conclude?Given that Kevin has three classes in a row, each lasting two hours, we can calculate the total duration of his classes. Three classes, each two hours long, amount to a total of 6 hours.
Since Kevin's first class starts at seven in the morning, we add 6 hours to that time, resulting in the conclusion of Karen's last class at three in the afternoon.
Understanding schedules and timetables is essential for effective time management. In academic settings, students often have multiple classes with varying durations throughout the day.
Calculating the end time of a class or event based on its start time and duration helps individuals plan their activities and allocate their time efficiently.
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Sketch the region enclosed by x + y² = 2 and x + y = 0. Decide whether to integrate with respect to x or y, and then find the area of the region. The area is ...
The area of the region enclosed by x + y² = 2 and x + y = 0 is 4/3 + 4√2/3 square units.
How to find limits of integration?To find the limits of integration, we need to solve for the intersection points of the two curves.
x + y² = 2x + y = 0Substituting x = -y from the second equation into the first equation, we get:
(-y) + y² = 2y² - y + 2 = 0Using the quadratic formula, we get:
y = [1 ± √(1 - 8)]/2y = [1 ± i√7]/2Since we're dealing with a real-valued area, we can discard the complex solution. The two intersection points are:
(-1 - √2, 1 + √2)(-1 + √2, 1 - √2)We can see from the graph below that the region we're interested in is the one enclosed by the curves, which lies to the left of the y-axis.
The limits of integration for the area are y = 0 (the x-axis) and y = 1 + √2.
Since the curves intersect at right angles, we can integrate with respect to either x or y. However, since the region is easier to express in terms of y, we'll integrate with respect to y.
The equation for the curve x + y² = 2 can be rearranged as:
x = 2 - y²The area of the region is given by:
A = ∫[0, 1+√2] (2 - y²) dyA = 2y - (1/3)y³ |[0, 1+√2]A = 2(1+√2) - (1/3)(1+√2)³ - 0A = 2(1+√2) - (1/3)(3+2√2)A = 4/3 + 4√2/3Learn more about Limits of integration
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find the first derivative x cos(14x + 13y) = y sin x
To find the first derivative of the equation x cos(14x + 13y) = y sin x, we will need to use the chain rule and product rule.
First, we will differentiate each term separately:
d/dx(x) = 1
d/dx(cos(14x + 13y)) = -sin(14x + 13y) * d/dx(14x + 13y)
= -sin(14x + 13y) * 14
d/dx(y) = 0 (since y is a constant)
d/dx(sin(x)) = cos(x)
Next, we will apply the product rule to differentiate the left-hand side of the equation:
d/dx(x cos(14x + 13y)) = cos(14x + 13y) + x * (-sin(14x + 13y) * 14)
Now, we can set this expression equal to the derivative of the right-hand side of the equation and solve for the first derivative:
cos(14x + 13y) - 14x sin(14x + 13y) = y cos(x)
Our final answer for the first derivative is:
cos(14x + 13y) - 14x sin(14x + 13y) = y cos(x)
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Kate surveyed 16 politicians from her state about their views on certain issues. is this sample of citizens of the state likely to be representative?
The representativeness of a sample depends on how it is selected and whether it accurately reflects the characteristics of the larger population. Without more information about the sampling method used, it is difficult to determine if the sample of 16 politicians is likely to be representative of the citizens of the state.
If the sample was selected randomly from a diverse pool of politicians that accurately represents the political landscape of the state, there is a higher likelihood that the sample would be representative. However, if the sample was obtained through convenience sampling or if it disproportionately represents certain political affiliations or demographics, it may not be representative of the entire population of citizens in the state.
To assess the representativeness of the sample, it is important to consider factors such as the sampling method, sample size, diversity of the sample, and the specific characteristics being studied.
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Find the distance between the two points in simplest radical form.
(
8
,
6
)
and
(
3
,
−
6
)
(8,6) and (3,−6)
The distance between the two points (8,6) and (3,-6) in simplest radical form is √169 units.
The complete question is :
Find the distance between the two points in simplest radical form.
(8,6) and (3,−6)
What is the distance between the two points?The distance formula used in finding the distance between two points is expressed as;
D = √( ( x₂ - x₁ )² + ( y₂ - y₁ )² )
Given that. the two points are (8,6) and (3,-6).
Substituting the values into the formula, we get:
d = √((3 - 8)² + (-6 - 6)²)
Simplifying the expression inside the square root:
d = √((-5)² + (-12)²)
d = √(25 + 144)
d = √169
Therefore, the distance is √169 units.
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The sum of twice a nuber,n, and 14 is 30.
2x+14=30
2x =30-14
2x=16
x =8
Answer:
8
Step-by-step explanation:
Twice means 2 so twice a number,n, means 2 times n thus 2n
sum means add so, 2n + 14
"is" means equal so 2n + 14 = 30
Solve for n:
2n=16
N=8
M&m are produced so that 20% are yellow, 20% are red, orange, blue and green are all 10 % each. The rest are brown. If an m&m is picked at random, what is the probability that it’s brown
The probability that an M&M picked at random is brown is 30% if m&m picked brown at random. Probability refers to the measure of the likelihood of an event occurring.
To find the probability that an M&M picked at random is brown, we need to consider the given percentages of the other colors. Given that 20% are yellow, 20% are red, 10% are orange, 10% are blue, and 10% are green. First, let's add these percentages together:
20% + 20% + 10% + 10% + 10% = 70%
Since the total percentage should add up to 100%, we can find the percentage of brown M&Ms by subtracting the sum of the other colors' percentages from 100%:
100% - 70% = 30%
So, the probability that an M&M picked at random is brown is 30%.
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Please help... 100 points promised!
Answer:
Step-by-step explanation:
The probability of drawing 2 red cards from a standard 52-card deck can be calculated as follows:
There are 26 red cards in the deck, so the probability of drawing a red card on the first draw is 26/52.
After the first card is drawn, there are 25 red cards remaining in the deck out of 51 total cards, so the probability of drawing a red card on the second draw is 25/51.
To find the probability of both events happening together (drawing 2 red cards), we multiply the probabilities of each event:
(26/52) * (25/51) = 0.245 or approximately 24.5%
Therefore, the probability of drawing 2 red cards in a standard 52 card deck is approximately 24.5%.
My office is 10 ft by 12 ft. I want to buy border for the top of my wall. I have a 3ft door on a 10 ft wall and a 3 ft window directly across from it. How much wallpaper border should I buy?
a. 24
b. 44
c. 38
You should buy 38 feet of wallpaper that cover the border for the top of the wall using the perimeter of the room. Thus, option C is correct.
Length of office = 10 feets
width of office = 12 feets
Door length = 3 feet
Wall length = 10 feet
Window length = 3 feet
To estimate the length of the wallpaper border needed, we need to calculate the perimeter of the room that needs the bordering of wallpaper. It is given that only the top of the roof needs bordering.
We need to add the lengths of all 4 sides of the walls and subtract the lengths of the door and window.
Mathematically,
The perimeter of the room =(sum of the length of sides of the room) - (length of the window) - (length of the door)
Perimeter of room = (10 + 12 + 10 + 12) - 3 - 3
Perimeter of room = 38 ft
Therefore, we can conclude that we need to buy 38 feet of the wallpaper border.
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Federico enjoys catching pokemons in university campus. One day, while trying to catch charmander, he found the best spot next to a
perfectly circular pond. He was 43 feet from the bank and 75 feet from the point of tangency. Determine the radius of the pond using the
given information. Round to the nearest integer,
The radius of the pond is 32 feet, under the condition that 43 feet from the bank and 75 feet from the point of tangency.
Let us consider that the center of the circle O, the point of tangency T, and Federico's position P.
We can utilize these two points to form a line. The point of tangency is the place where Federico is closest to the pond. The radius of the pond is considered perpendicular to this line and passes through the point of tangency.
Firstly, we have to the distance between Federico's position P and covers passes through points T and B (the bank). This distance is equivalent to the given radius of the circle. We have to apply the formula for the distance between a point and a line to find this distance.
Let us assume this distance as d.
d = (|BT x BP|) / |BT|
Here
|BT| = line segment length of BT,
|BP| = line segment length of BP,
BT x BP = vectors cross product of BT and BP.
Here we evaluate |BT| applying the Pythagorean theorem
|BT|² = 75²+ r²
Here,
r = radius concerning the circle.
Then,
|BP|² = 43² + r²
Staging these values into our formula for d:
d = (|BT x BP|) / |BT|
= (|BT| × |BP|) / |BT|
= |BP|
= √(43² + r²)
We want to solve for r, so we can square both sides:
d² = 43² + r²
r² = d² - 43²
r = √(d² - 43²)
Placing in d = 75,
r = √(75² - 43²)
≈ 32 feet
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please please please please please please help me this is all due tomorrow
For the following probabilities:
7. Theoretically, blue will occur 100 times.8. Based on experiment, blue will occur 95-105 times.9. a) 1/4, b) 1/2, c) 3/4.10. a) 0.25, b) 0.5, c) 0.75.11. spade can occur 125 times theoretically.12. experimentally spade occurs 500 times.How to determine probability?7. Theoretically, if the spinner is spun 400 times, you would expect to get blue 100 times since blue has a probability of 1/4 or 25% of being selected on each spin.
8. Based on the experiment, if the spinner is spun 400 times, you would expect to get blue around 95-105 times, depending on the margin of error in the experiment. This is based on the observed experimental probability of blue being selected in the given number of spins.
9. a) P(club) = 13/52 or 1/4
b) P(red card) = 26/52 or 1/2
c) P(not a heart) = 39/52 or 3/4
10. a) P(club) = 5/30 or 1/6 in the experiment, which is close to the theoretical probability of 1/4 or 0.25.
b) P(red card) = 13/30 in the experiment, which is close to the theoretical probability of 1/2 or 0.5.
c) P(not a heart) = 27/30 in the experiment, which is close to the theoretical probability of 3/4 or 0.75.
11. Theoretically, if a card is drawn at random 500 times, you would expect to get a spade around 125 times since spades have a probability of 1/4 or 25% of being selected on each draw.
12. Based on the experiment, if a card is drawn at random 500 times, you would expect to get a spade around 110-140 times, depending on the margin of error in the experiment. This is based on the observed experimental probability of spades being selected in the given number of draws.
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Image transcribed:
7. Theoretically, if the spinner is spun 400 times, how many times would you expect to get blue?
8. Based on the experiment, if the spinner is spun 400 times, how many times would you expect to get blue?
9. A card is drawn from a standard deck of cards. Find each probability.
a) P(club)
b) P(red card)
c) P(not a heart)
10. The table below shows the results of an experiment in which a card was drawn at random 30 times. Find each probability based on the experiment and compare to the theoretical probability.
Result | Frequency
Heart | 3
Diamond | 10
Club | 5
Spade | 12
a) P(club)
b) P(red card)
c) P(not a heart)
11. Theoretically, if a card is drawn at random 500 times, how many times would you expect to get a spade?
12. Based on the experiment, if a card is drawn at random 500 times. how many times would you expect to get a spade?
Pls help me with this! Will give points!
Answer:
Subtract 1 from both sides.
Answer:
subtract 1 from both sides. because taking out the 1 from 1 and 1 from 17 will equal 16. which leaves t/4=16
1. Given the function: f(x)=-2x+7 and g(x)=5x-16
Find the function for h(x)=f(x)+g(x)
The function h(x) can be represented by -3x-9 .
Linear Equation
An equation can be represented by a linear function. The standard form for the linear equation is: y= mx+b , for example, y=7x+6. Where:
m= the slope.
b= the constant term that represents the y-intercept.
For the given example: m=7 and b=6.
The question gives two linear equations that represent two functions: f(x)=-2x+7 and g(x)=5x-16.
For solving this you should sum both equations. See below
h(x)=f(x)+g(x)
h(x)=-2x+7 +5x-16
h(x)=-3x-9
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An experiment is conducted with a coin. The results of the coin being flipped twice 200 times is shown in the table.
Outcome Frequency
Heads, Heads 75
Heads, Tails 40
Tails, Tails 35
Tails, Heads 50
What is the P(No Heads)?
85%
75%
37.5%
17.5%
The probability of no heads is given as follows:
P(No Heads) = 17.5%.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
The total number of outcomes is given as follows:
200.
The desired outcomes, those without heads, are Tails, Tails, which happened 35 times, hence the probability is given as follows:
p = 35/200
p = 0.175
p = 17.5%.
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Factor 21r–56. Write your answer as a product with a whole number greater than 1.
The factored form of 21r-56 is: 21r-56 = 7r(-5) or 7r*(-5)
What is factoring?Factoring is the process of finding the factors (or divisors) of a given mathematical expression or number. In algebra, factoring involves breaking down an expression into simpler parts (called factors) that can be multiplied together to obtain the original expression. The goal of factoring is to simplify the expression or solve an equation by expressing it in terms of its factors.
In the given question,
To factor 21r-56, we first need to find the greatest common factor (GCF) of the two terms. The GCF of 21 and 56 is 7. We can also factor out r since it is a common factor of both terms. Therefore, we can write:
21r-56 = 7r(3-8)
Simplifying the expression inside the parentheses, we get:
21r-56 = 7r(-5)
Therefore, the factored form of 21r-56 is:
21r-56 = 7r(-5) or 7r*(-5).
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A student takes a measured volume of 3. 00 m hcl to prepare a 50. 0 ml sample of 1. 80 m hcl. What volume of 3. 00 m hcl did the student use to make the sample?.
The student used 30.0 mL of 3.00 M HCl to make the 50.0 mL sample of 1.80 M HCl.
To find the volume of 3.00 M HCl needed to make a 50.0 mL sample of 1.80 M HCl, we can use the equation:
M₁V₁ = M₂V₂
Where M₁ is the initial concentration, V₁ is the initial volume, M₂ is the final concentration, and V₂ is the final volume.
We are given M₁ = 3.00 M, M₂ = 1.80 M, and V₂ = 50.0 mL. We can rearrange the equation to solve for V₁:
V₁ = (M₂V₂) / M₁
V₁ = (1.80 M * 50.0 mL) / 3.00 M
V₁ = 30.0 mL
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Procter & Gamble reported that an American family of four washes an average of 1
ton (2000 pounds) of clothes each year. If the standard deviation of the distribution
is 187. 5 pounds, find the probability that the mean of a randomly selected sample of
50 families of four will be between 1980 and 1990 lbs.
The required probability is approximately 0.1253 or 12.53%.
We can use the central limit theorem to approximate the sampling distribution of the mean of the weights of clothes washed by 50 families of four. According to the central limit theorem, the sampling distribution of the mean will be approximately normal if the sample size is large enough (n > 30), regardless of the shape of the population distribution.
The mean of the sampling distribution of the mean will be equal to the population mean, which is 2000 lbs
[tex]SEM=\frac{\sigma}{\sqrt{n} }[/tex]
σ = population standard deviation
n = sample size.
[tex]SEM=\frac{187.5}{\sqrt{50} }[/tex]
= 26.5
Now we need to find the z-scores corresponding to the two values of the mean.
[tex]z_1=\frac{1980-2000}{26.5}[/tex]
= -0.75
[tex]z_2=\frac{1990-2000}{26.5}[/tex]
= -0.38
Using a standard normal table, we can find the probability that a z-score is between -0.75 and -0.38.
P(-0.75 < Z < -0.38) = 0.1253
Therefore, the required probability is approximately 0.1253 or 12.53%.
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Find the derivative of y with respect to x if y= e⁻¹⁷ˣ.
dy/dx = ...
The derivative of y with respect to x when y = e⁻¹⁷ˣ is dy/dx = -17eˣ
Find the derivative?
To find the derivative of y with respect to x when y = e⁻¹⁷ˣ, we'll use these terms: "derivative", "respect", and "with".
Identify the function. In this case, y = e⁻¹⁷ˣ
Find the derivative (dy/dx) of the function with respect to x. To do this, we'll apply the chain rule, which states that the derivative of a composite function is the derivative of the outer function times the derivative of the inner function.
The outer function is e^(u) (where u is the inner function), and its derivative with respect to u is e^(u). The inner function is -17x, and its derivative with respect to x is -17.
Apply the chain rule. The derivative of y with respect to x (dy/dx) is the product of the derivative of the outer function and the derivative of the inner function: (e^(u)) * (-17).
Substitute u with the inner function (-17x). So, dy/dx = (e⁻¹⁷ˣ * (-17).
The derivative of y with respect to x when y = e⁻¹⁷ˣ is dy/dx = -17eˣ
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The teacher could buy the shirt online 3.50 each she would also pay a fee of 9.50 for shipping the shirts.
The function that represents the total cost (y) of buying x shirt online of $3.50 each and shipping charges of $9.50 is 3.50x + 9.50 = y
Cost of each shirt = $3.50
The fee for shipping the shirts is = $9.50
Total number of shirts bought by shirt online = x
The total cost of buying x shirts is represented by y
The total cost will be the sum of each cost of the shirt and shipping charges
y = 3.50x + 9.50
Hence, the function that represents the total cost y of buying x shirt online of $3.50 each and shipping charges of $9.50 is 3.50x + 9.50 = y
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The question is incomplete complete question is :
The teacher could buy the shirt online at 3.50 each she would also pay a fee of 9.50 for shipping the shirts. Write a function that can be used to find y the total cost in dollars of buying x shirts online.
What does the mapping found in part b tell you about the relationship between the two circles? explain your reasoning.
The term "mapping" refers to the process of creating a mathematical correspondence between points or objects in two different sets. In this case, the mapping found in part b tells us that there exists a one-to-one correspondence between the points in Circle A and the points in Circle B.
There is a one-to-one correspondence between the points in Circle A and the points in Circle B, and that this correspondence preserves distance.
This means that for every point in Circle A, there is exactly one corresponding point in Circle B that is the same distance away from the center of the circle as the original point.
Since the correspondence is one-to-one, it follows that the two circles have the same number of points. That is, if Circle A has n points, then Circle B also has n points.
Therefore, we can conclude that the two circles have the same size.
Furthermore, because the correspondence preserves distance, any transformation that maps one circle onto the other must be a rigid motion, meaning it preserves angles and distances.
In particular, the transformation must be an isometry.
Therefore, we have shown that the two circles are congruent. That is, they have the same size and shape, and can be transformed onto one another by a combination of translations, rotations, and reflections.
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The radius of a circle is 15 ft. Find its area in terms of pi
Answer:
A= 225π ft²
Step-by-step explanation:
A = π r²
A= π 15²
A= 225π ft²
Answer:
706.86
Step-by-step explanation:
1. A=πr^2 : The formula to find the area of a circle.
2. A = π15^2 : Substitute the given radius value into the equation.
3. Insert equation into calculator
706.86 (Rounded to the nearest hundredth)
Please help it would be amazing if you knew this
The solution of the function (f - g)(x) is 17x + 7.
How to solve composite function?A function relates input and output. A composite function is generally a function that is written inside another function.
Therefore, let's solve the composite function as follows:
f(x) = 10x + 3
g(x) = -7x - 4
Therefore, let's find (f - g)(x)
Hence,
(f - g)(x) = f(x) - g(x)
Therefore,
f(x) - g(x) = 10x + 3 - (-7x - 4)
f(x) - g(x) = 10x + 3 + 7x + 4
f(x) - g(x) = 17x + 7
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The cows on a farm were producing 12.8 liters of milk per cow each day. The farmer bought 60 new cows and began using a new feed for all the cows. Now each of his cows is producing 15 liters of milk each day. How many cows are on the farm now if the farmer gets 1340 more liters of milk per day than he did before any changes were made?
There are now 260 cows on the farm.
Let's start through calculating the amount of milk produced with the aid of the original cows before any modifications were made.
If every of the unique cows was producing 12.8 liters of milk in keeping with day, and there had been "x" cows, then the entire amount of milk produced by means of the original cows could be:
12.8x liters per day
After the adjustments, the farmer has 60 more cows and all cows produce 15 liters of milk per day. So, the full amount of milk produced with the aid of all cows after the modifications would be:
15(x + 60) liters per day
we're told that the new milk production is 1340 liters more according to day than before the changes. So, we can set up an linear equation:
15(x + 60) = 12.8x + 1340
Simplifying the equation, we get:
15x + 900 = 12.8x + 1340
2.2x = 440
x = 200
therefore, there were at first 200 cows on the farm. After the changes, the full number of cows would be:
x + 60 = 200 + 60 = 260 cows
So, there are now 260 cows on the farm.
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A phone company set the following rate schedule for an m-minute call from any of its pay phones.what is the cost of a call that is under six minutes?
For calls that are 6 minutes less, the rate is $0.70 per minute.
To find the cost of a call that is under 6 minutes, we simply need to use the first part of the rate schedule.
Let's say the call lasts for m minutes. Since m is less than or equal to 6, we can use the first part of the rate schedule, which gives us
c(m) = $0.70 per minute
So the cost of the call is simply the rate per minute times the number of minutes
c(m) = $0.70 × m
For example, if the call lasted 4 minutes, the cost would be
c(4) = $0.70 × 4 = $2.80
Therefore, the cost of a call that is under 6 minutes is simply $0.70 per minute.
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--The given question is incomplete, the complete question is given
" A phone company set the following rate schedule for an m-minute call from any of its pay phones.
c(m)=
{0.70 when m≤6
0.70+0.24(m−6) when m>6 and m is an integer
0.70+0.24([m−6]+1) when m>6 and m is not an integer }
what is the cost of a call that is under six minutes?"--