Joanna's pay for working overtime varies jointly as the number of hours she works and her hourly pay rate. if her overtime pay is $103.44 when she works 8 hours at an hourly rate of $8.62, then find the number of hours worked when her overtime pay is $213.75 at an hourly rate of $9.50.

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

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?

Solve 30% of what = 60 step by step