Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 2 - Solving Linear Inequalities - 2.5 - Solving Compound Inequalities - Exercises - Page 86: 27

Answer

The solution is $y\gt 7$. The graph is shown below.

Work Step by Step

The given inequality is $\Rightarrow -y+3\leq 8$ and $y+2\gt 9$ Solve the first inequality. $\Rightarrow -y+3\leq 8$ Add $y-8$ to each side. $\Rightarrow -y+3+y-8\leq 8+y-8$ Simplify. $\Rightarrow -5\leq y$ Solve the second inequality. $\Rightarrow y+2\gt 9$ Subtract $2$ from each side. $\Rightarrow y+2-2\gt 9-2$ Simplify. $\Rightarrow y\gt 7$ Overlap the solutions. $\Rightarrow y\gt 7$ Hence, the solution is $y\gt 7$.
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