Problem $6-5($Algo$)$

Riya Khatri, contract negotiator for Nebula Airframe Company, is currently involved 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, she found that the first unit took $3,000$ labor hours, the second took $2,250$ labor hours, and the third took $2,120$ hours. Use Exhibit $6\mathrm{.}5.$

In a contract for three more units, how many labor hours should Khatri plan for?

Note: Round your answer to the nearest whole number.

Answer is complete but not entirely correct.

Number of labor

$7,371$

hours