r2. In the supply and demand model, equilibrium occurs when r a. all buyers and sellers are satisfied with their respective quantities at the market p rice rb. supply and demand intersect rc. quantity supplied equals quantity demanded rd. the price has no tendency to change e. all of the above2 . In the supply and demand model, equilibrium occurs when a. all buyers and sellers are satisfied with their respective quantities at the market price. b. supply and demand intersect. c. quantity supplied equals quantity demanded. d. the price has no tendency to change. e. all of the above