Arrange 3/5,5/8,5/6 and 7/4 in ascending order

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

Which table represents a linear function? i'll give brainliest to first answer ^'^

Hi, can anyone show me how to do this problem? 100 points for this. in advance