Eliza is playing roulette on her computer for play money. to play, she “spins” a wheel that consists of 18 red numbers, 18 black numbers, and 2 numbers that are neither red nor black. before spinning, she bets $7.60 that the number will come up black. if she wins, she gets back the amount she bet plus $7.60, and if she loses, she must forfeit the amount she bet. if she spins the wheel many times, making the same bet each time, how much can she expect to lose per spin, on average?

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

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e