Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 4 - Section 4.2 - Compound Inequalities - Exercise Set - Page 272: 47

Answer

$(-\infty,-3)\cup(4,\infty)$. The graph is shown below.

Work Step by Step

The given compound inequality is $\Rightarrow 3x\gt12$ or $2x\lt-6$. Solve each inequality separately. $\Rightarrow 3x\gt12$ or $2x\lt-6$. $\Rightarrow x\gt4$ or $x\lt-3$. First graph then take the union of the solution sets of the two inequalities. The graph is shown in the image file. We can write the compound inequality. $x\gt4$ as $(4,\infty)$ and $x\lt-3$ as $(-\infty,-3)$ The union is $(-\infty,-3)\cup(4,\infty)$.
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