College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.7 - Solving Inequalities - 1.7 Exercises - Page 149: 81

Answer

See below.

Work Step by Step

Let $m$ be the driven miles, then our inequality is: $30+0.1m\lt50\\0.1m\lt20\\m\lt200$ Thus it will save money if we drive less than $200$ miles.
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