Algebra 2 (1st Edition)

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 - Guided Practice for Examples 1, 2, and 3 - Page 531: 2



Work Step by Step

Let $y=ab^x$. Then our equations are: $8=ab^2$ and $32=ab^3$. If we divide the second equation by the first one we get: $4=b$. Then $8=a\cdot4^2=16a\\a=0.5$. Thus $y=0.5\cdot4^x$
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