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SAT® Subject Test in Math 1 & 2

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Predicting Average Rate

SATSTM-FCBQJU

Given the graph below, find the average rate of change over the interval $[-3, 21]$

A

$-6$

B

$-1$

C

$\cfrac{1}{6}$

D

$\cfrac{-1}{6}$

E

$-24$