Dam is planning to buy a new electric piano that costs $1,150.00. in addition to 5241.30
as in his savings account, adam receives $245.60 for work he has done for his father's
usiness and $240.40 from his grandparents. how much more money does adam need in
der to buy the electric piano? grid in your answer below.

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

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Factor the polynomial by its greatest common monomial factor.