Requirements 1. Using the high-low method, estimate the linear relationship y=a+bX, where y is the total annual operating cost of a helicopter and X is the number of round-trips it makes to JFK airport during the year. 2. Give examples of costs that would be included in a and in b. 3. If Radig Travel expects each helicopter to make, on average, 1,300 round-trips in the coming year, what should be its estimated operating budget for the helicopter fleet