Answer
$4$
Work Step by Step
We see that as we move from the left toward the $x$ value of $-4$, the $y$ value tends toward $4$ as well.
Therefore, $\lim\limits_{x \to 4^{-}} f(x)=4$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 13 - A Preview of Calculus: The Limit, Derivative, and Integral of a Function - Chapter Review - Review Exercises - Page 926: 21
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