shutterfly sells 8x10 photo prints for $2.62 an 16x20 photo prints $12.95. Your friends says that this doesnt make any sense because the dimensions of the large print are only twice as big as the small print. How could you explain these pricing differences to your friend?

The verbal translation for the difference of m and 7 increased by 15

Need solving this second acceleration problem.

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