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Use a schedule when curves are replaced by numbers

Use a schedule when curves are replaced by numbers

The rule is to compare additions, not totals. For quantities 1 through 4, a monopolist’s marginal revenues are $80, $60, $40, and $20. Marginal cost is $30, and the demand price at three units is $60. The profit-maximizing price is $30 $45 $50 $60 $75 $60 The third unit adds $40 of revenue against $30 […]

A monopolist has no independent supply curve

A monopolist has no independent supply curve

Quantity depends on both demand and cost. A monopoly has no independent supply curve because it never changes output when cost conditions change it always produces at minimum average total cost its price is fixed independently by government its marginal cost cannot be measured price-output choices depend jointly on demand and cost price-output choices depend […]

Marginal revenue includes the price-cut effect

Marginal revenue includes the price-cut effect

Barriers protect the single seller

Barriers protect the single seller

Keep short-run adjustment separate from long-run adjustment

Keep short-run adjustment separate from long-run adjustment

Industry cost conditions determine the final price

Industry cost conditions determine the final price

Long-run equilibrium combines three equalities

Long-run equilibrium combines three equalities

Profit attracts entry

Profit attracts entry

Use the market graph before the firm graph

Use the market graph before the firm graph

The short-run supply curve is marginal cost above AVC

The short-run supply curve is marginal cost above AVC

Profit depends on price relative to ATC

Profit depends on price relative to ATC

For a price taker, price equals marginal revenue

For a price taker, price equals marginal revenue