Answer
$[-2,\infty)$
Work Step by Step
$x-7\geq-9$
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.