Help with math and tell me how you for the answer

Sunday: 1 1 2 monday: 1 tuesday: 2 1 2 wednesday: 1 3 4 thursday: 2 friday: 1 1 2 saturday: 2 jenna is a swimmer and trains every day. the schedule shown outlines the number of hours she trains each day. what is the total number of hours that jenna trains during the week?

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

What numbers are included in the set of integers? what numbers are not included?