Use substitution to write an equivalent quadratic equation. (3x + 2)2 + 7 (3x + 2) – 8 = 0 - u2 + 74 - 8 = 0, where u = (3x + 2)2 u2 + 7u - 8 = 0, where u = 3x + 2 u2 + 70 - 8 = 0, where u = 7(3x + 2) lu² +4-8=0 what’s the answer?

Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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