A company produces products for sale. The quantity demanded per month is 250 units if the price is pegged at 1400. When the price is reduced to 1100, the quantity demanded would rise to 1000 units. On the other hand, the quantity supplied to the market is 750 units at a price of 1000. If the price is lowered to Ksh 800, then the quantity supplied would reduce to 600 units. The supply and demand functions are known to be linear.

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

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

Which statement accurately explains whether a reflection over the y axis and a 270° counterclockwise rotation would map figure acb onto itself?