For the pair of supply and demand equations, where x represents the quantity demanded in thousands of units and p the unit price in dollars, find the equilibrium quantity and the equilibrium price.
?
and 
?
A. xb = 3,000 units pb = $45
B. xb = 2,000 units pb = $41
C. xb = 3,000 units pb = $44
D. xb = 2,500 units pb = $41
E. xb = 2,000 units pb = $45
Answer: B
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