Answer
$k=0.0174$
Work Step by Step
$A=A_{0}e^{kt}$
For $A_{0}=21.3, A=42.7, t=40$
$42.7=21.3e^{40k}$
$2.0047=e^{40k}$
$\ln 2.0047=40k$
$k=0.0174$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 9 - Section 9.6 - Exponential Growth and Decay; Modeling Data - Exercise Set - Page 740: 12
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
