## Algebra 2 (1st Edition)

$-5\leq x\leq4$
$|2x+1|\leq9$ implies $-9\leq 2x+1\leq9\\-10\leq 2x\leq8\\-5\leq x\leq4$. Thus $-5\leq x\leq4$. I used a graphing utility to graph this set.