#### Answer

$(-\infty, 4]$

#### Work Step by Step

The graph peaks at $y=4$ and goes infinitely far down.
This means that the function includes all y-values that are less than or equal to $4$.
Thus, the range of $f$ is $(-\infty, 4]$.

Published by
Pearson

ISBN 10:
0-13417-894-7

ISBN 13:
978-0-13417-894-3

$(-\infty, 4]$

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