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liraira [26]
3 years ago
14

What is the average rate of change for ƒ(x) = −3x + 1 over the interval −2 ≤ x ≤ −1?

Mathematics
2 answers:
ycow [4]3 years ago
8 0

Answer:

The average rate of change is -3

Step-by-step explanation:

we have

f(x)=-3x+1

This is a linear function in slope intercept form  f(x)=mx+b

where

m is the slope

b is the y-intercept

In this problem

The slope is equal to

m=-3

Remember that

In a linear function the average rate of chance is a constant and is equal to the slope of the linear function in any interval

therefore

The average rate of change is -3

mart [117]3 years ago
6 0

Answer:

-2/9 is the correct answer.

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Elza [17]

Answer:

The answer to your question is : f(-2) = 2

Step-by-step explanation:

Just look for -2 in the x- axis and look for some line or point, vertical to number two.

In your example you can find a point two units upward the x-axis.

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gogolik [260]

Where <em>x </em>is the number of books sold, <em>i </em>is income, and <em>c </em>is cost:

<em>c = 4x + 3500 </em> ($4 per book plus the 3500 flat marketing fee)

<em>i = 15x </em>($15 per book)

You are looking for the point where these intersect: the intersection is where the income is equal to the cost, and at any point after that the income is greater than the cost. So, set the equations equal to each other:

<em>4x + 3500 = 15x     </em>

subtract 4x from both sides

<em>3500 = 11x</em>              

divide both sides by 11

<em>x = 318.181818</em>

So, you would have to sell a minimum of 319 books in order to make a profit.

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