Find the equilibrium point (x,p) of the demand and supply equations. The equilibrium point is the price p and number of units x that satisfy both the demand and supply equations.
?
Demand Supply 
?
A. (250, 445)?
B. ??(445, -250)?
C. ?(445, 250)?
D. ?(-250, 445)?
E. ?(-250, -445)?
Answer: A
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A. Domain: (-?, ?); range: (-?, ?)
B. Domain: (-?, ?); range: (-?, ?)
C. Domain: (-?, ?); range: (-?, ?)
D. Domain: (-?, ?); range: (-?, ?)
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B. -27
C. - 
D. 