# A profit-maximizing firm in the short run has total fixed costs of \$100 . Its variable costs are as below.

A profit-maximizing firm in the short run has total fixed costs of \$100. Its variable costs are as below. Output     Total Variable Cost         0                         \$0         1                         \$40         2                         \$72         3                         \$96         4                         \$124         5                         \$155         6                         \$192         7                         \$232         8                         \$280         9                         \$330         10                       \$430 (A)   (3pts.) Calculate average total cost when output is 5 units.                                                                 ANSWER: ________ (B)   (2 pts.)What is the marginal cost of the 7th unit of output?                                                                 ANSWER: ________ Answer C & D in the short run and assuming that the firm can only produce integer amounts of output. (C)    (3 pts) Suppose this firm can sell all the output it wants in the short run at a price of \$52. How much output should it produce and sell and what will its profits (or losses) be?                   ANSWER: Output will be              ________                                   Profits or losses = ________   (D)      (2 pts.) Suppose instead this firm can sell all the output it wants in the short run at a price of \$28. Again, how much output should it produce and sell and what will its profits (or losses) be?                   ANSWER: Output will be                ________                                    Profits or losses =  ________