4. Refer to Exhibit 22-7. The short run supply curve of this perfectly competitive firm starts at what level of output? Price and Cyst (dossars) 1 r- 7 6 V 1 D O 10 O 30 O 50 O 60 10 20 30 MC 40 Quantity SO 60 70 ATC d

4. Refer to Exhibit 22-7. The short run supply curve of this perfectly competitive firm starts at what level of output? 10 30 50 60