Answer
$4=log_a5$.
Work Step by Step
A logarithmic function is in the form of $y=log_ax$, thus $(5,4)$ on the graph means $4=log_a5$.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.3 Logarithmic Functions - 4.3 Exercises - Page 447: 106
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