Algebra 1: Common Core (15th Edition)

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

Chapter 7 - Exponents and Exponential Functions - Get Ready! - Page 415: 19

Answer

Percent decrease; 25%

Work Step by Step

The new number is lower than the original number, so we use the equation for percent decrease. The equation for percent decrease is the following: $(\frac{original amount - new amount}{original amount})\times100$. Thus, we plug in the numbers to find: $(\frac{20-15}{20})\times100=25$%
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.