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Practice Free Response. Answer Key. a). QTY TC MC ATC AVC TVC. ATC. S. 1. B. $9. $9. $6. A. D. 2. D. 1. Q. Q. 2. 1. Profit. 1- Firm. Market. MC. Price. Price. B. MR 2 = D 2. ______________. AVC. = D. MR. A.
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Practice Free Response Answer Key
a) QTY TC MC ATC AVC TVC
ATC S 1 B $9 $9 $6 A D 2 D 1 Q Q 2 1 Profit 1- Firm Market MC Price Price B MR2 = D2 ______________ AVC = D MR A .………….. $6 ----------------------- ------------------ AFC 6 0 0 5 Quantity (market) Quantity (firm) b) i) 5 units => set MR = MC ii) zero economic profit (P-ATC )* Qty d) i) 6 units set MR = MC ii) profit is $15 dollars e) i) Shutdown when price $1.75 because P < AVC. ii) Exit long run P < ATC f) i) Stay open if price is $2 or higher (min of AVC) ii) Exit in long run unless price is $6 or higher (min of ATC)
10) MP crosses AP at max (as MP falls, worker efficiency falls) 11) MC crosses both AVC & ATC at min 12) Yes, MC determines change in AVC & ATC 13) Diminishing marginal returns ensures that MP must eventually fall => when MP falls => MC must rise (leads to upward sloping MC curve as workers become less efficient)