Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 4 - Section 4.3 - Logarithmic Functions - 4.3 Exercises - Page 353: 100

Answer

$0.6$ hours

Work Step by Step

Given $k=0.25, C/C_0=0.9$, we have $t=-0.25ln(1-0.9)=0.58$ hours
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