Solve the following equations 1) 8a – 5 = 11

2) 10 + 6y = 34

3) x/12 - 5 = 4

4) -3(10 + 2y) – 4y = 10

5) -2(5x – 3) + 6x = -14

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