Please help me with this math assignment!

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

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Choose the correct translation for the following statement. it is at most ten. x< 10 x< 10 x> 10 x> 10