Answer
$-3,\frac{7}{3}$
Work Step by Step
Remove the absolute value sign to get $3x+1=-8\ or\ 3x+1=8$, thus $x=-3,\frac{7}{3}$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 2 - Linear and Quadratic Functions - Chapter Test - Page 188: 14
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