Answer
$68$
Work Step by Step
$f(t)=80-17\log(t+1)$
$f(4)=80-17\log(4+1)$
$f(4)=80-17\log5\approx80-17\times0.699$
$f(4)\approx68.1$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 5 - 5.2 - Logarithmic Functions and Their Graphs - 5.2 Exercises - Page 380: 83c
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