Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 9 - Section 9.3 - Exponential Functions - Exercise Set: 40a


The retail revenues from internet shopping was expected to be around $\$61.9$ billion.

Work Step by Step

2005 is 2 years after 2003 so $t=4$. Substitute 2 to $t$ in the given equation to have: $\\y=39(1.26)^t \\y=39(1.26)^2 \\y=61.9164 \\y\approx 61.9$
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