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 - 7-6 Exponential Functions - Practice and Problem-Solving Exercises - Page 457: 16

Answer

2.5

Work Step by Step

We plug 3 in for x: $y= 20 \times .5^{3}= 20 \times .125=2.5$
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