Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Review Exercises - Page 145: 171

Answer

no more than $80$ miles.

Work Step by Step

Step 1. Assume the customer can drive as far as $x$ miles per day. The cost for the second option is given by $cost2=24+0.2x$ dollars. Step 2. Let $cost2\leq 40$. We have $24+0.2x\leq 40$ or $0.2x\leq16$ and $x\leq80$ miles.
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