Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 3 - Section 3.5 - Exponential Growth and Decay; Modeling Data - Exercise Set - Page 508: 72

Answer

$y=2.567x+197.923$, $ r=0.997$, fit well.

Work Step by Step

Plot the data and use $y=ax+b$ to fit; we can get $a=2.657, b=197.923, r=0.997$, that is $y=2.567x+197.923$ as shown in the figure. As $r$ is close to $1$, it indicates a very good fit using this model.
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