Richardson Travel offers helicopter service from suburban towns to John F. Kennedy International Airport in New York City. Each of its 6 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. V X