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 Rabuet Travel expects each helicopter to make, on average, 800 round-trips in the coming year, what should be its estimated operating budget for the helicopter fleet? Rabuet Travel offers helicopter service from suburban towns to John F. Kennedy International Airport in New York City. Each of its seven helicopters makes between 500 and 1,000 round-trips per year. The records indicate that a helicopter that has made 500 round-trips in the year incurs an average operating cost of $435 per round-trip, and one that has made 1,000 round-trips in the year incurs an average operating cost of $300 per round-trip. Read the requirements. Requirement 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. y + X