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When a perfectly competitive market is in long-run equilibrium,price is equal to marginal cost,the individual firm is operating at the minimum of its short-run and long-run average cost curves,and economic profit equals zero.
Variable Costs
Costs that vary directly with the level of production output, such as raw materials and direct labor expenses.
Relevant Costs
Relevant costs are those that will be affected by a decision in a specific situation and are considered when making financial or other managerial decisions.
Fixed Costs
Costs that do not change with the level of goods or services produced within a certain scale.
Product
Any item or service that is created through a process and is intended to be supplied to a market to satisfy a want or need.
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