The Home Improvement store purchases $300 worth of materials. They charge a 55% markup. For how much will the materials be sold

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Which value of c would make he following expression completely factored? 8x+cy

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