Adair Advertising has 2 spherical balloons One has a radius of 3 feet and the other one has a radius of 5 feet What is the diference in the volume of the two balloons, rounded to the nearest tenth of a
cubic foct? Use 3.14 for .
201.1 °
205.3
410.3
67.0

Asmall foreign car gete 42 miles per gallon and user 35 gallons on a trip.gasoline costs $1.05 per gallon.what was the cost of gasoline per mile driver?

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

I'm confused on this could anyone me and show me what i need to do to solve it.