Helly works at mcdonald's for $7.25 per hour when she works. on monday, she worked for 4 hours. on wednesday she works for 2.5 hours. on friday, she worked for 3 hours. how many total hours did she how much total money did she earn at mcdonald's that week?

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

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

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary