Answer
$[-9,6]$
Work Step by Step
Step 1. From $|2x+3|\leq15$, we have $-15\leq 2x+3\leq15$ and $-18\leq 2x\leq12$, thus $-9\leq x\leq6$ and in interval notation $[-9,6]$.
Step 2. See graph for the interval on a number line.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Review Exercises - Page 145: 167
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