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Suppose that there is a negative externality in the market for burritos. The graph below shows the supply and demand curves for burritos.

Graphs with window x: 0 to 14, y: 0 to 14. Start Graph, Color red

xy
04
15
26
37
48
59
610
711
812
913
1014
1115
1216
1317
1418
Start Graph, Color blue
xy
010
19
28
37
46
55
64
73
82
91
100
11-1
12-2
13-3
14-4
Start Graph, Color green
xy
06
17
28
39
410
511
612
713
814
915
1016
1117
1218
1319
1420
Label "Quantity of burritos" at pixel coordinates (175,0).Label "Price of burritos" at pixel coordinates (0,170).Label "D (MPB)" at (1,10-1). Label "S (MPC)" at (1,4+1). Label "S (MSB)" at (5,6+1*5).

What is the market equilibrium quantity?

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What is the market price?

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What is the optimal (efficient) quantity?

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What should the government do in order to ensure the market produces the optimal (efficient) quantity?

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How big should the government's corrective taxes or subsidies be in this case?

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As a result of this negative externality, the market

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