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 - Linear Functions - 1.1 Solving Linear Equations - 1.1 Exercises: 35

Answer

a. $C=1.50(x)+230$ b. 320 dollars c. 146 windows

Work Step by Step

a. C=cost to clean windows for one day x=number of windows washed $C=1.50(x)+230$ b. x=60 $C=1.50(60)+230$ $C=90+230$ $C=320$ c. C=450 $450=1.50(x)+230$ $450-230=1.50(x)$ $220=1.50(x)$ $220\div1.50=x$ $x=146.67$ $x=146$
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