Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 4 - An Introduction to Functions - 4-1 Using Graphs to Relate Two Quantities - Standardized Test Prep - Page 239: 23



Work Step by Step

The Formula to find the percent increase is the following: $\frac{Change}{Original}$ The original is 8.50 per hour. The raise is to 9.35 per hour. $\frac{9.35-8.50}{8.50}=0.10$ This results in a 10% increase. When you get another 10% increase you would find the increase pay 9.35 x 1.10(+10%) and you would get 10.285. Round off to 10.29 since dollars only measure to the hundredths place. Then another %10 increase 10.29 x 1.10 = 11.3135 or $11.32.
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