Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 5 - Cumulative Test for Chapters 3-5 - Page 417: 32



Work Step by Step

$4^{x-5}+21=30$ $4^{x-5}=9$ $\log_44^{x-5}=\log_49$ $x-5=\log_49$ $x=\frac{\ln9}{\ln4}+5=6.585$
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