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kompoz [17]
3 years ago
11

Find the average rate of change for the given function over the indicated values of x. If necessary, round your final answer to

two decimal places.
f(x)=x^2+6x, where x goes from 5 to 7.
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
8 0

Answer:

The average rate of change of the function in this interval is of 18.

Step-by-step explanation:

The average rate of change of a function f(x) in an interval from a to b is given by:

A = \frac{f(b) - f(a)}{b - a}

In this question:

f(x) = x^2 + 6x

Where x goes from 5 to 7.

This means that b = 7, a = 5. So

f(7) = 7^2 + 6(7) = 49 + 42 = 91

f(5) = 5^2 + 6(5) = 25 + 30 = 55

The rate of change is:

A = \frac{f(7) - f(5)}{7 - 5} = \frac{91 - 55}{2} = 18

The average rate of change of the function in this interval is of 18.

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