Will reward with high points if these questions are aswered correctly

carnival wilson gets a flu shot that breaks apart over time. on the day of the vaccination, he has 500 ml of the solution. after one day, he has 400 ml in his system. after two days, there was 320 ml. after three, there was 256 ml.

what is the exponential equation for this problem?
what is the decay factor?
what is the decay rate?

What are the related frequencies to the nearest hundredth of the columns of the two way table? group 1: a-102 b-34group 2: a-18 b-14edited: i don’t have all day to be waiting for an answer. i figured it out.

In the 30-60-90 triangle below side s has a length of and side r has a length

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