Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 9 - Section 9.5 - Exponential and Logarithmic Equations - Exercise Set: 2

Answer

$x=4$

Work Step by Step

Note that $81=3^4$. Write $81$ as $3^4$ to obtain: $3^x=3^4$ RECALL: If $a^x = a^y$, then $x=y$. Use the rule above to obtain: $3^x=3^4 \\x=4$
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