Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 3 - Solving Inequalities - 3-6 Compound Inequalities - Lesson Check: 6

Answer

The rightmost symbol should be ) rather than ].

Work Step by Step

The infinity symbol, $\infty$, indicates the solution set continues on without an endpoint. Infinity itself is not part of the solution set, so it should be followed by a parenthesis rather than a bracket. The bracket indicates inclusion in the solution set.
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