Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 1 - Section 1.7 - Absolute Value Equations and Inequalities - 1.7 Exercises - Page 120: 114


set of all real numbers

Work Step by Step

The given inequality, $ |x-4|+5\ge4 ,$ is equivalent to \begin{array}{l}\require{cancel} |x-4|\ge4-5 \\\\ |x-4|\ge-1 .\end{array} For any $x$, the left side of the inequality above is a nonnegative number. This is always greater than the negative number at the right. Hence, the solution is the $\text{ set of all real numbers .}$
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