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law off supply
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firms are willing to produce and sell a greater quantity of a good when the price of a good is higher
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industrial organization
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a part of economics that studies how firms decisions about prices and quantities depend on the market conditions they face
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total revenue
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the amount a firm receives for the sale of its output
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total cost
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the market value of the inputs a firm uses in production
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profit
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a firm's total revenue minus its total cost
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Formula for profit
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total revenue - total cost
TR-TC
TR-TC
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measuring total revenue
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the quantity of output the firm produces multiplied by the price at which it sells its output
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formula for total revenue
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price x quantity sold
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opportunity cost
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all the things given up to acquire an item
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explicit costs
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input costs that require an 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 by the firm
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total cost is the sum of
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explicit and implicit costs
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formula for total cost
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fixed cost + variable cost
FC+VC
FC+VC
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economic profit
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total revenue minus total cost, including both explicit and implicit costs
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accounting profit
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total revenue minus total explicit cost
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why are accounting profits higher than economic profits?
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because accountants only consider explicit costs. They ignore implicit costs
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production function shows the relationship between
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the number of workers and quantity of output
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production function image
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shows how total cost depends on the quantity of output
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total cost curve
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the increase in output that arises from an additional unit of input
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marginal product
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the property whereby the marginal product of an input declines as the quantity of the input increases (production per worker decreases as you add more workers but overall production can still increase)
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diminishing marginal product
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diminishing marginal product (decrease output per worker)
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flattening of production function indicates
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each unit of production becomes more expensive as production rises
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steepening of the total-cost curve indicates
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Costs that do not vary with the quantity of output produced. ex: rent
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fixed costs
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costs that vary with the quantity of output produced
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variable costs
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total fixed costs plus total variable costs
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Total Cost (TC)
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the total cost divided by the quantity produced
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average cost per unit
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the increase in total cost that arises from an extra unit of production
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marginal cost
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total costs divided by quantity of output
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Average Total Cost (ATC)
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change in total cost / change in quantity
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marginal cost formula
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total cost/quantity
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average total cost formula
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The marginal cost curve crosses the average total cost curve at the
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minimum of average total cost
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U shaped
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shape of the average total cost curve
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its minimum
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marginal cost curve crosses the average total cost curve at
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declines
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average fixed cost always ___ as output rises
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rises
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average variable cost usually ___ as output increases because of diminishing marginal product
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the property whereby long-run average total cost falls as the quantity of output increases. "getting bigger is cheaper"
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economies of scale
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the property whereby long-run average total cost rises as the quantity of output increases
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diseconomies of scale
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the property whereby long-run average total cost stays the same as the quantity of output changes
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constant returns to scale
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undefined