For the first 40 hours, he gets 8.75/hour, so 408.75 = 350. For the last 7.5 hours, he gets (8.751.5)/hour. 8.751.5 = 13.125/hour, or 13.13/hour. Then do 13.13/hour 7.5 hours = 98.48. Now add together 350 and 98.48. That equals $448.48 total for the week