SOLUTION :
D(q) = 1100 - 2q is given.
It does not seem to be correct. What is q in the equation? We are relating a q with q . It may not be right relationship.
It could be :
D(p) = 1100 - 2p
=> Revenue, R(p) = D(p) * p
=> R(p) = (1100 - 2p) * p
=> R(p) = 1100 p - 2p^2 : 2nd Option (ANSWER).
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