9. Find b.

A.

16

B.

26

c. 76

D.

104

52

30

a

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

Nine more than four times a number is the same as one less than twice the number. find the number?

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list