$x\leq-5$ or $x\geq2$
Work Step by Step
$-x-4\geq1\\-x\geq5\\x\leq-5$ or $2-5x\leq-8\\-5x\leq-10\\x\geq 2$ Thus $x\leq-5$ or $x\geq2$. Then, by using a graphing utility, the solution set is attached.
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