Answer
$[3, 6]$
Refer to the attached image below for the graph.
Work Step by Step
Add 4 to each part to have:
$\\5+4 \le 3x-4+4\le 14+4
\\9 \le 3x \le 18$
Divide 3 to each part to have:;
$\\3 \le x \le 6$
Thus, the solution is $[3, 6]$.
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 1 - Section 1.8 - Inequalities - 1.8 Exercises - Page 89: 30
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