College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 4 - Exponential and Logarithmic Functions - Exercise Set 4.1: 73

Answer

a) 100% b) 68.5% c) 30.8%

Work Step by Step

a) Plug in 0 for x into function f. f(0) = 80$e^{-.5(0)}$+20 Simplify this equation, giving you the answer: 100. b) Plug in 1 for x into function f. f(1) = 80$e^{-.5(1)}$+20 Simplfy this equation and round your answer, giving you the answer: $\approx$68.5 c) Plug in 4 for x into function f. f(4) = 80$e^{-.5(4)}$+20 Simplify this equation and round your answer, giving you the answer: $\approx$30.8
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