Answer
$f(t)=\dfrac12
(4)^t$
Work Step by Step
$$f(t)=\left(\dfrac12\right)^{1-2t}=\dfrac12 \cdot \left(\dfrac12\right)^{-2t}=\dfrac12 \cdot
(2^2)^t=\dfrac12
(4)^t$$
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter 4 - Section 4.2 - Exponential Functions - 4.2 Exercises - Page 412: 114
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