For every A earned, Max's parents allowed Max to stay up 15 minutes later. Max's normal bedtime was 8:30. a. For Max's bedtime to change to 9:00 how many A's must he earn?
b. Max would like to have his bedtime to be one hour later. How many A's would that require?
c. For every C, Max's parents made his bedtime 1/2 hour earlier! Max earned 2 A's and 2 C's. what time must he go to bed?

answer A, B and C thanks