The johnson’s sold corn at a local farmers market. they sold 56 1/2 pounds of corn to 15 customers. how many total ounces of corn did they sell?

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

Anyone know these questions? i need ,.

What is the inverse of f(x) = 6x -24