The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday.
The frequency distribution below summarizes the results:
Waiting time Number of
(minutes) customers
0 -3
14
4-7
9
8-11
12 - 15
16 - 19
20 - 23
3
24 -27
1

What is the volume of the sphere shown below with a radius of 3?

Solve the system of equations. y= 2x y= x^2 - 15

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