On his road trip, leon stops to refuel and get some snacks. he has the following purchases: 12 gallons of gas at $2.89 per gallon 2 granola bars for $1.59 each 1 apple for $0.89 2 bottles of vitamin water for $1.39 each leon must pay 7.5% sales tax on everything but the gas, which already has tax included in the per gallon price. if leon paid $44.64, then he for his purchase.
a. did not pay enough
b. paid the correct amount
c. paid $2.60 too much
d. paid $3.11 too much

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

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

How do you write something in scientific notation?