Price of Good X(Px)Quantity of Good X(Qx)Own Price ElasticityTotal Revenue01000.000590-0.11450A80-0.258001570-0.4310502060-0.6712002550C125030B-1.5012003530-2.3310504020-4.00D4510-9.00450500-?0The demand function in the accompanying table is QXd = 100 ? 2PX. Based on this information, when QX = 80, the price, PX (point A), is:
A. $10.
B. $15.
C. $20.
D. $5.
Answer: A
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