The answer is C.37— following the picture, you know the blue angle and the green angles are supplements (add up to 180) so you add them and set them to 180 and solve. This solves out to be 37
He gets 10.5 dollars an hour over time and when he's working regular he earns 840 dollars so 840 divided by 10.5 is 80 so add an extra hour and he then makes more.
