The inequality is .

Apply Subtraction property of inequality: Subtract 8 from each side.

            (Apply Additive inverse property:  )

                  (Apply Additive identity property:  )

                           (Subtract: )

Graph the solution set on a number line.

Note: A dot means that this point is included in the solution set.

Check:

To check, substitute a number greater than or equal to 4, in .

                            (Substitute )

                                (Add: )

The inequality is true.

The inequality solution set is .