In 2010, a glacier was 171 meters away from a road. every year since then, it has moved 3 meters closer to the road. at this rate, in what year will the glacier meet the toad?

Can someone me with this problem . show your work .

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 is the value of x in the equation 2(x-4) = 4(2x + 1)?