Karen tutors english. for each hour that she tutors, she earns 30 dollars. let e be her earnings (in dollars) after tutoring for h hours. write an equation relating e to h . then use this equation to find karen's earnings after tutoring 11 hours.

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

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Answer! if you don’t mind, can you explain