One year after you buy a tree, it is 8 feet tall. Each year after you buy the tree, it grows 2.25 feet. Write a function that represents the arithmetic sequence. How long does it take for the tree to reach its maximum height of 35 feet?

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