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Consumption
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dollars worth of expenditure on consumer goods
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Marginal Product of Labor
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the rate at which output rises given increase in the labor force
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Law of Diminishing Returns
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after some point, in the presence of a fixed output, subsequent equal increments of a variable input yield ever smaller increments of output
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Physical Capital
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plant and equipment, roads and vehicles, inventories of semi-finished and finished products, state of knowledge we have accumulated, level of training or expertise of our labor force
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Investment
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production of capital goods
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Demand Curve for Investments
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for any given interest rate, it tells the amount of investment that entrepreneurs want to do
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Supply Curve of Savings
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gives the amount of saving the consumer will do for any given interest rate
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Equilibrium Needs
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1. every consumer is on the highest indifference curve
2. entrepreneurs are maximizing profit
3. total supply of C1 = total demand for C1
4. total supply of C2 = total demand for C2
5. S = I
2. entrepreneurs are maximizing profit
3. total supply of C1 = total demand for C1
4. total supply of C2 = total demand for C2
5. S = I
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Economic Efficiency
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1. it is impossible for two consumers to conduct a mutually beneficial trade
2. it is impossible to make any consumer better off by sliding along the PPC
2. it is impossible to make any consumer better off by sliding along the PPC
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Collateral
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property or other assets that a borrower offers a lender to secure a loan
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Explicit Costs
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input costs that require and outlay of money by the firm
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implicit costs
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input costs that do not require an outlay of money
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production function
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the relationship between the quantity of inputs used to make a good and the quantity of output of that good
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efficient scale
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the quantity of output that minimizes average total cost
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economies of scale
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long run average total cost falls as the quantity of output increases
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diseconomies of scale
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long run average total cost rises as the quantity of output increases
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constant returns to scale
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long run average total cost remains the same as the quantity of output changes
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competitive market
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a market with any buyers and sellers trading identical products so that each buyer and seller is a price taker
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sunk cost
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a cost that has already been committed and cannot be recovered
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natural monopoly
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when a firm can supply a good or service to an entire market at a smaller cost than two or more firms