Suppose you are given the following production schedule:
Labor Output Produced
1 worker 560 units
2 workers 1,000 units
3 workers 1,400 units
4 workers 1,700 units
5 workers 1,850 units
6 workers 1,900 units
7 workers 1,915 units
Suppose this firm can sell its output at a per unit price of $2.50.
If the cost of hiring a worker is $450, how many workers should this firm hire in order to maximize profit?