## Elementary Algebra

Published by Cengage Learning

# Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.4 - Inequalities - Concept Quiz 4.4: 8

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#### Work Step by Step

The solution set of the inequality x $\lt$ -5 is ($\infty$, -5) because -5 is not included in the solution set. This is why there is a parenthesis next to -5 and not a bracket. Infinity always has a parenthesis next to it as well, as shown.

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