Section: Principles of Microeconomics

4) If purchasing an additional sewing machine would increase a firm's total revenue by more than it would increase a firm's total cost, then the firm should

1. buy the additional sewing machine
2. not purchase the sewing machine
3. only buy the sewing machine if another one breaks
4. decrease the current number of sewing machines
5. purchase the additional sewing machine only if the firm can purchase a total of four machines