2. Given the following power demand function, N = p-0.3.t-0.3.0.2.C-0.3, where N is the number of transit trips, p is the fare (in dollars), t is the travel time (in hours), a is the cost of automobile trip (in dollars), and c is the average income (in dollars). (a) Given 20,000 passengers per hour who currently use the transit system at a flat fare of $1.20 per trip, what will be the change in N for a flat fare of $0.80 and what will be the transit agency gain? (b) Given the cost of an automobile trip (including parking fee) of $4.00, what will be the change in N if the parking charges increases by $0.60?