Sally bought a shirt on sale for 30% off the original price of $20 . how much did she pay for the shirt

What is the value of y? round to the nearest tenth

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

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5