5. Jack Simpson, contract negotiator for Nebula Airframe Company, is currently in bidding on a follow-up government contract. In gathering cost data from the first three units, which Nebula produced under a research and development contract, he found that the first unit took 2,000 labor hours, the second took 1,800 labor hours, and the third took 1,692 labor hours. In a contract for three more units, how many labor hours should Simpson plan for? (15 pts) Total for next 3 units (see Exhibit 6.5)