The diagram below shows selected cost and revenue curves for a firm in a monopolistically competitive industry. 
FIGURE 11-1
-Refer to Figure 11-1.Assuming this firm is producing its profit-maximizing level of output,what is the per-unit profit being earned by this firm?
Definitions:
Investment
The act or method of distributing assets, typically funds, in anticipation of earning revenue or gains.
Account Value
The total monetary worth of an investment or trading account at any given point in time.
Interest Rate
The rate charged or paid for the use of money, typically expressed as an annual percentage of the principal.
Annual Interest Rate
The percentage increase in money that occurs over a year, which includes interest on loans, deposits, or investments.
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