Lydia is painting flower vases. each vase takes 3⁄16 of a quart of paint. she has 21⁄2 quarts of paint. how many flower vases can she paint? a. 3111⁄16 b. 101⁄2 c. 151⁄6 d. 131⁄3 plz

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