Answer
$[-6,-3]$
Work Step by Step
We can remove the absolute sign to get: $-3\leq 2x+9\leq 3\longrightarrow -12\leq 2x\leq -6\longrightarrow -6\leq x\leq -3$ or in interval notation $[-6,-3]$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 1 - Equations and Inequalities - Chapter 1 Test Prep - Review Exercises - Page 181: 113
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