John is making shelves for his room. he wants 3 shelves and each shelf requires 8 2/3 feet of lumber. how many feet of lumber does he need? simplify (or reduce) your answer, if necessary.

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

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

What is the answer to the question 5x+2x