Sophina bought 3 yards of trim to put around a rectangular scarf. she wants the width of the scarf to be a whole number that is at least 6 inches and at most 12 inches. if she uses all the trim, what are the possibles dimensions of her scarf? write your answer in inches.

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