Answer
$(-1,3)$
Work Step by Step
Parentheses define the end of a range as less than or greater than but not equal to the number.
Therefore, the equivalent inequality of $-1\lt x\lt3$ is written as $(-1,3)$.
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 1 - Functions and Their Graphs - Section 1.1 Functions - 1.1 Assess Your Understanding - Page 53: 1
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