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 - Page 13: 36


a. $R=7(x)+50$ b. 190 dollars c. $P=5.5(x)-180$ d. 40 dollars e. 33 windows

Work Step by Step

a. R=revenue, x=number of windows cleaned $R=7(x)+50$ b. x=20 $R=7(20)+50$ $R=140+50$ $R=190$ c. $P=(7-1.50)x+(50-230)$ $P=5.5(x)-180$ d. x=40 $P=5.5(40)-180$ $P=220-180$ $P=40$ e. P=0 $0=5.5(x)-180$ $0+180=5.5(x)$ $180=5.5(x)$ $180\div5.5=x$ $x=32.72$ $x=33$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.