| 21. | Marginal cost is an economic concept that measures the cost of an additional unit.
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| 22. | The secret is that the marginal cost of a telephone call is practically zero.
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| 23. | This is what economists mean by " marginal cost ."
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| 24. | Marginal costs are not affected by changes in fixed cost.
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| 25. | In the long run a firm operates where marginal revenue equals long-run marginal costs.
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| 26. | A related characteristic that alters information markets is that information has almost zero marginal cost.
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| 27. | The marginal cost of the third satellite is 300M?
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| 28. | Most work considers costs in terms of marginal cost.
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| 29. | The marginal cost is the change in the cost of production for a single unit.
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| 30. | "It's hard to offset that type of decline with marginal cost savings, " he said.
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