Provide an appropriate response.The supply and demand equations for a product are p = 
q + 20 and p = 200 - 
q, respectively, where q represents the number of units and p represents the price per unit in dollars. The equilibrium price is
A. $10.
B. $20.
C. $30.
D. $40.
E. $50.
Answer: E
Mathematics
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. Identify a, b, and p.
A. 
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D. 
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