2. The changing speed of a car is modeled by the function S(t) =8t + 55, where t is time in seconds. Interpret the model. (multiple choice)
a. The car has an initial speed of 8 units and is speeding up by 55 units per second.
b. The car has an initial speed of 0 units and is speeding up to a speed of 55 units by 8
units per second.
c. The car has an initial speed of 55 units and is speeding up by 8 units per second.
d. The car has an initial speed of 55 units and is slowing down by 8 units per second.

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

Find all solutions for 2y - 4x =2 y = 2x + 1 site: socratic.org

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"