IF ANYONE I WILLING TO HLEP PLEASE I NEED HELP ON HOW TO DO THIS

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

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

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.