Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 9 Quadratic Relations and Conic Sections - Cumulative Review - Page 659: 49



Work Step by Step

Let $y=ab^x$. Then two of our equations are: $313=ab^0$ and $616=ab^2$. If we divide the second equation by the first one we get: $2=b^2$, thus because $b$ is positive: $b=\sqrt2$. Also $b^0=1$, thus $a=313$. Thus $y=313\cdot\sqrt2^x$
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