Answer
$45\leq x\leq 70$
Work Step by Step
Let $x$ be the speed on the highway in mph. Then the legal range is $45\leq x\leq 70$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 1, Equations and Inequalities - 1.6 Solve Inequalities - 1.6 Exercises - Problem Solving - Page 47: 58a
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