## Intermediate Algebra (6th Edition)

$[-2,\infty)$
$x-7\geq-9$ Solve for x by adding 7 to each side of the equation. $x-7+7\geq-9+7$ $x\geq-2$ This is written in interval notation as $[-2,\infty)$ The use of [ indicates that -2 is included in the set of possible values for x.