Which of the relations given by the following sets of ordered pairs is not a function? o {(-5,2), ( – 3,3), (0, 6), (0,4), (2, 1)}
o {(0, – 8), (1, – 8), (2, – 8), (3, – 8), (4, - 8)}
o {(-6, - 1), (-4, - 2), (-9, - 5), (-3, -1), (- 1, – 7)}
o {( – 4,7). ( - 2,5), (- 1,3), (2,5),(4, - 6)

What is the length of the unknown leg in the right triangle ?

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

As a salesperson you get $18/day and $2.80. for each sale you make ifyou want to make at least $79 in one day, how many sales would you need to make? a 21b 22c 23d 24