When you multiply a mixed number by a fraction less than 1, will the answer be smaller? (please provide explanations and examples :) )

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Is the point (0, 8) on the x-axis or y-axis? how do you know?

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?