Suppose the supply curve of portable radio rentals in Golden Gate Park is given by: P = 5 + 0.1Q, where P is the daily rent per unit in dollars and Q is the volume of units rented in hundreds per day. The demand curve for portable radios is: P = 20 – 0.2Q. If each portable radio imposes $2.70 per day in noise costs on others, by how much will the equilibrium number of portable radios rented exceed the socially optimal number?

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

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

Can any one me with the answers to these questions asap?