Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 1-2 - Cumulative Review: 9

Answer

a)Steve plans to run $11$ miles in week $4$. b) Steve will run $20$ miles in week $10$.

Work Step by Step

a) When $w = 4$ $R = 1.5w+5$ $R = 1.5(4) + 5$ $= 6+5$ $= 11$ Steve plans to run $11$ miles in week $4$. b) When $R = 20$ $R = 1.5w+5$ $20 = 1.5w+5$ $20-5 = 1.5w$ $15 = 1.5w$ $w = 10$ Steve will run $20$ miles in week $10$.
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