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# Average Rate of Change Over an Interval

SATSTM-QLXNWW

Find the average rate of change of the function:

$$f(x)=(x+2)^{2}-1$$

...on the interval $[-1,4]$.

A

$4$

B

$6$

C

$\cfrac{30}{7}$

D

$7$

E

$9$