## Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley

# Chapter 4 - Exponential Functions - Exercises to Skills for Chapter 4 - Page 185: 18

#### Answer

$\pm 4$

#### Work Step by Step

Note that $a^\frac{1}{2}=\sqrt{a}$. This means that $16^\frac{1}{2}=\sqrt{16}$. So, what value squared yields $16$? The answer should be $-4$ and $4$, so those are the solutions.

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