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total product
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Total output produced by the firm.
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marginal product
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The increase in output that arises from an additional unit of input.
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law of diminishing returns
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The principle that, at some point, adding more of a variable input, such as labor, to the same amount of a fixed input, such as capital, will cause the marginal product of the variable input to decline.
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fixed cost
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a cost that does not change, no matter how much of a good is produced
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depreciation
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a decrease in price or value
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overhead
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A company's total fixed costs
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variable cost
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a cost that rises or falls depending on how much is produced
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total cost
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the sum of fixed costs plus variable costs
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marginal cost
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the increase or decrease in costs as a result of one more or one less unit of output