Im struggling with this any help would be appreciated

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

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

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid