Amy had a beautiful plant. The plant began sprouting two days before Amy bought it, and she had it for 98 days before it died. At its tallest, the plant was 30 centimeters tall. Let h(t) denote the height of Amy’s plant h (measured in centimeters), t days from the time she bought it. Define the Domain in interval notation.

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

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.

Heather, sarah, nicky, and jill each have nine markers. how many markers do they have in all?