Refer to the figure below. Calculate the monopolist's profit at the profit-maximizing output level. 
Definitions:
Enthymeme
An argument in which one of the premises is not explicitly stated, but is assumed or implied.
Unstated Premise
An implicit assumption in an argument that is not directly expressed but is necessary for the argument's conclusion.
O Proposition
A type of categorical proposition that denotes some S are not P, where S stands for the subject and P for the predicate.
Enthymeme
A syllogism in which one of the premises is implicit or assumed rather than explicitly stated.
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