Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 3 - Solving Inequalities - 3-4 Solving Multi-Step Inequalities - Practice and Problem-Solving Exercises - Page 192: 56


most hours you can spend walking is 10 hours

Work Step by Step

Let x=number of hours dog walking then 15-x=number of hours tutoring $8(15-x) +7.5x\geq115$ Distribute 8: $120-8x+7.5x\geq115$ Simplify: $-0.5x\geq-5$ Divide both sides by -0.5: $\frac{-0.5x}{-0.5}\geq\frac{-5}{-0.5}$ Simplify: $x\leq10$
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