Write an expression or equation representing the real-world information below. You can use one or variables and it can be written as an expression (without an equal sign) or as an equation (with an equ
sign).
1. Gene has a pocket full of quarters and dimes that amount to $2.45.

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