Intermediate Algebra (6th Edition)

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

Chapter 9 - Section 9.4 - Exponential Growth and Decay functions - Exercise Set - Page 564: 2

Answer

The final amount after 5 years is approximately $564$.

Work Step by Step

RECALL: Eponential growth is represented by the formula $y=C(1+r)^x$ where C = initial/original amount r - growth rate x = number of time intervals The given exponential growth has: C = 402 r = $7\%$ x = 5 years Substitute these value into the given formula above to have: $y=402(1+7\%)^5 \\y=402(1+0.07)^5 \\y=402(1.07^5) \\y=563.8257957 \\y\approx 564$
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