Question 1 Report
Fig. 1 shows a firm's average revenue (AR), marginal revenue (MR), marginal cost (MC) and average cost (AC) curves in a market with one dominant supplier.
(a) Which condition identifies the firm's profit-maximising output, Qm? [1]
(b) Explain why the firm is not a price taker. [2]
(a) The profit-maximising output, \(Q_m\), occurs where:
\[MC=MR\]
This is because producing an extra unit is worthwhile while marginal revenue exceeds marginal cost; profit is maximised at the output where they become equal. [1]
(b) The firm faces a downward-sloping AR, or demand, curve. [1] Unlike a price taker, it can influence the price by changing its output: to sell more, it must generally lower price; by restricting output, it can charge a higher price. [1]
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