## Precalculus (6th Edition) Blitzer

Published by Pearson

# Chapter 10 - Section 10.7 - Probability - Exercise Set - Page 1121: 81

#### Answer

a. the denominator will be zero if $x=4$. b. $2$. c. $2$.

#### Work Step by Step

a. We can see that when $x=4$, $f(x)=\frac{0}{0}$, which is undefined. Thus, $f(x)$ is undefined because the denominator will be zero if $x=4$. b. We can see from the table that when $x$ approaches $4$ from the left, $f(x)$ is getting closer to the integer $2$. c. We can see from the table that when $x$ approaches $4$ from the right, $f(x)$ is getting closer to the same integer $2$.

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