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The long run is a period of time just long enough so that at least one of the resources cannot be changed.

Normal profits refer to

Table 5.3Table 5.3Total OutputTotal Cost  0  2  4  6  810$100$196$212$310$430$570Refer to Table 5.3. If the average variable cost is $52 for an output of 11 units, the

When economic profit is zero, only normal profit is earned.

Marginal cost (MC) is equal to average total cost (ATC) at

Figure 5.1In Figure 5.1, what profit does the firm make on the thirty-fifth good produced and sold?

When a firm is making decisions about the use of fixed and variable resources, it is

Scenario 5.1A dentist’s practice is organized as a sole proprietorship. Last year the dentist’s total revenue was $320,000 and total costs were $250,000. The dentist left a job paying $112,000 a year to start the sole proprietorship.According to the information in Scenario 5.1, how much accounting profit did the dentist make last year?

Table 5.2Table 5.2Quantity of OutputTotal Fixed CostTotal Variable Cost12345678$40$40$40$40$40$40$40$40$  30$  44$  60$  80$110$150$200$280Refer to Table 5.2. For what unit of output is the marginal cost double the total fixed cost?

Figure 5.1Refer to Figure 5.1. If the current production level is 90 and the firm wishes to maximize profit, it should