The inequality is .

Apply addition property of inequality: Add 9 to each side.

                 (Apply additive inverse property: )

                       (Apply additive identity property: )

                           (Add: )

Check:

To check, substitute three different values for p into the original inequality : 11, a number less than 11, and a greater than 11.

Let three values are .

If then   (This is true)

If then   (This is false)

If then   (This is false).

Graph the Solution set on a number line.

Note: A circle means that this point is not included in the solution set.

The inequality solution set is .