Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 9 - Section 9.4 - Exponential Growth and Decay functions - Exercise Set - Page 565: 21b

Answer

Time Intervals: $1.5714$ Final Amount after $x$ time intervals: 13.5 Is your Final Amount Reasonable?: yes

Work Step by Step

Time intervals 7 years for half life 11 years $11/7=1.5714$ final amount $40*(.5)^{1.5714}$ $40*.336475$ $13.459$ $13.5$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.

GradeSaver will pay $15 for your literature essays
GradeSaver will pay $25 for your college application essays
GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical
GradeSaver will pay $10 for your Community Note contributions
GradeSaver will pay $500 for your Textbook Answer contributions