Answer
Time Intervals: 2
Final Amount after $x$ time intervals: 10
Is your Final Amount Reasonable?: yes
Work Step by Step
Time intervals
half life of 7 years
14 years
$14/7=2$
Final Amount
$40*.5^2$
$40*.25$
$10$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
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: 21a
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