Find a three-digit palindromic number which is exactly 19 times the sum of its digits

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

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

15 points what is the end behavior of this graph? & what is the asymptote of this graph?