# Chapter 3 - Solving Inequalities - Mid-Chapter Quiz - Page 193: 9

$n\geq-2$

#### Work Step by Step

$2n+1\geq-3\longrightarrow$ subtract 1 from each side $2n+1-1\geq-3-1\longrightarrow$ subtract $2n\geq-4\longrightarrow$ divide each side by 2 $2n\div2\geq-4\div2\longrightarrow$ divide $n\geq-2$ Since -2 is included in the solution set, the endpoint of the graph is a solid circle.

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