c3f239dc_Monopoly__Characteristic_or_Event
[Perfect Competition] The firm’s demand and marginal revenue curve is a horizontal line at the market price. [Monopoly] The firm faces the market demand curve; marginal revenue is below market demand. [Characteristic or Event] 
Demand and marginal revenue curves
M a r k e t
D e m a n d a n d m a r g i n a l r e v e n u e c u r v e s
P r i c e
P r o f i t m a x i m i z a t i o n
P r o f i t
E f f i c i e n c y
Monopoly
Characteristic or Event