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: 18

Answer

$(-2,3)$. The graph is shown below.

Work Step by Step

The given compound inequality is $3x+2\gt-4$ and $2x-1\lt5$. Solve each inequality separately. $\Rightarrow 3x+2\gt-4$ and $2x-1\lt5$. $\Rightarrow 3x\gt-4-2$ and $2x\lt5+1$. $\Rightarrow 3x\gt-6$ and $2x\lt6$. $\Rightarrow x\gt-2$ and $x\lt3$. First graph then take the intersection of the solution sets of the two inequalities. The graph is shown in the image file. We can write the compound inequality. $x\gt-2$ as $(-2,\infty)$ and $x\lt3$ as $(-\infty,3)$ The intersection is $(-\infty,3)\cap(-2,\infty)=(-2,3)$.
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