Refer to Exhibit 12-8. If input costs are constant and there are no barriers to entry, the long-run equilibrium price of a pound of walnuts will be about: Pounds of Walnuts 1,000 2,000 3,000 4,000 5,000 6,000 Total Cost $3,000 $5,500 $7,500 $8,000 $11,000 $15,000