REAL ANSWERS ONLY !! The average cost of manufacturing x computers per day is given by the expression below

A) Simply the quotient by dividing each term in the numerator by the denominator.

B) Use this result to determine the average cost of manufacturing x = 160 computers in one day

(Problem) 0.0042 -0.7x2 + 190x + 5000 / x

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

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?