Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 7 - Exponents and Exponential Functions - 7-6 Exponential Functions - Practice and Problem-Solving Exercises - Page 457: 38

Answer

The values are $\{\frac{1}{25},\frac{2}{5},4,40, 400,4000\}$. The range is increasing.

Work Step by Step

The given function is $g(x)=4\cdot 10^x$ Substitute the values $x=\{-2,-1,0,1,2,3\}$ For $x=-2$. $\Rightarrow g(-2)=4\cdot 10^{-2}$ $\Rightarrow g(-2)=\frac{4}{10^2}$ $\Rightarrow g(-2)=\frac{4}{100}$ $\Rightarrow g(-2)=\frac{1}{25}$ For $x=-1$. $\Rightarrow g(-1)=4\cdot 10^{-1}$ $\Rightarrow g(-1)=\frac{4}{10^1}$ $\Rightarrow g(-1)=\frac{4}{10}$ $\Rightarrow g(-1)=\frac{2}{5}$ For $x=0$. $\Rightarrow g(0)=4\cdot 10^{0}$ $\Rightarrow g(0)=4\cdot 1$ $\Rightarrow g(0)=4$ For $x=1$. $\Rightarrow g(1)=4\cdot 10^{1}$ $\Rightarrow g(1)=4\cdot 10$ $\Rightarrow g(1)=40$ For $x=2$. $\Rightarrow g(2)=4\cdot 10^{2}$ $\Rightarrow g(2)=4\cdot 100$ $\Rightarrow g(2)=400$ For $x=3$. $\Rightarrow g(3)=4\cdot 10^{3}$ $\Rightarrow g(3)=4\cdot 1000$ $\Rightarrow g(3)=4000$.
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