Question

The firm has total fixed costs of $9 and a constant marginal cost of $3 per unit. The firm will maximize profit with a. 9 units of output. b. 15 units of output. c. 21 units of output. d. 30 units of output.

Answer 1

b. 15 units of output.

Step-by-step explanation:

information regarding sales price and quantity demanded is missing, so I looked it up (see attached file):

units sales revenue total costs profits

9 $216 $36 $180

15 $270 $54 $216

21 $252 $72 $180

30 $90 $99 ($9)