Sean earns $9.50 an hour.
In order to find this, we have to first find out how many hours total he worked. To do this, we add his Saturday and Monday totals together.
4.5 + 8 = 12.5 hours.
Now that we have the hour total, we take the amount earned and divide it by that total for our answer.
$118.75 / 12.5 hours = $9.50/hr.