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 11 - Data Analysis and Displays - 11.1 - Measures of Center and Variation - Exercises - Page 592: 45

Answer

$f(-2)=\frac{1}{49}$

Work Step by Step

The given function is $\Rightarrow f(x)=7^x$ Substitute $-2$ for $x$. $\Rightarrow f(-2)=7^{-2}$ Use $a^{-n}=\frac{1}{a^n}$. $\Rightarrow f(-2)=\frac{1}{7^{2}}$ Use $7^2=49$. $\Rightarrow f(-2)=\frac{1}{49}$
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