Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 6 - Exponential Functions and Sequences - 6.4 - Exponential Growth and Decay - Exercises - Page 319: 10

Answer

Initial amount $a=175$ Rate of growth $r=2.8\%$ $h(5)=200.9$

Work Step by Step

The given expression is $\Rightarrow h(t)=175(1.028)^t$ $\Rightarrow h(t)=175(1+0.028)^t$ The standard form of an exponential growth function is $y=a(1+r)^t$ Initial amount $a=175$ Rate of growth $r=0.028=2.8\%$ Substitute $5$ for $t$. $\Rightarrow h(5)=175(1.028)^5$ Evaluate the power. $\Rightarrow h(5)=175(1.14806261049)$ Simplify. $\Rightarrow h(5)=200.910956836$ Round to the nearest tenth. $\Rightarrow h(5)=200.9$
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