Precalculus: Mathematics for Calculus, 7th Edition

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

Chapter 4 - Review - Exercises - Page 390: 94

Answer

$15.4$ years

Work Step by Step

Given $r=0.045,A(t)=2P$, we have $2P=Pe^{0.045t}$ for compounding continuously. Thus $t=ln2/0.045\approx15.4$ years
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