Answer
$y=0.5\cdot8^x$
Work Step by Step
Let $y=ab^x$.
Then our equations are: $4=ab^1$ and $32=ab^2$.
If we divide the second equation by the first one we get: $8=b$.
Then $4=a\cdot8^1=8a\\a=0.5$.
Thus $y=0.5\cdot8^x$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 7 Exponential and Logarithmic Functions - 7.7 Write and Apply Exponential and Power Functions - 7.7 Exercises - Quiz for Lessons 7.6-7.7 - Page 536: 11
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