At lunch time, Mike often borrows money from his friends to buy snacks in the school cafeteria. Mike borrowed $1.05 from his friend David four days last week to buy cookies. How much did Mike barrow from David last week?

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

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

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie