Which of the following represents a relation that is not a function? a. x 7 -5 10 -7 y 34 32 40 34 b. x -7 -5 -7 2 y 34 32 40 34 c. x -7 -5 -1 2 y 34 32 40 34 d. x -7 -5 7 10 y 34 32 40 34

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities