Answer
$[-10,2]$
Work Step by Step
Start from the original inequality, multiply by $2$, we have $-6\leq x+4\leq6\longrightarrow -10\leq x\leq2$ and in interval notation $[-10,2]$
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 - Test - Page 182: 25
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