The inequality is .

Apply addition property of inequality: Add 10.2 to each side.

              (Apply additive inverse property: )

                     (Apply additive identity property: )

                               (Add: )

Graph the solution set on a number line.

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

Check:

To check, substitute a number greater than 15.5 in .

              (Substitute )

                             (Substract: )

The inequality is true.

The inequality solution set is .