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: 50

Answer

$x=32$

Work Step by Step

RECALL: $\log_b{x}= y \longrightarrow b^y=x$ Use the rule above to obtain: $5^2=x-7 \\25=x-7$ Add $7$ on both sides of the equation to obtain: $32=x$
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