On a visit to sea spectacular, an outdoor aquarium, your nephew notices that each time a dolphin performs a trick it is rewarded with a fish. you have read the brochure that explains that the dolphins are trained this way to ensure that they will continue to perform the tricks for several performances each day. this is an example of:

Which change is illustrated by the shift taking place on this graph? a decrease in supply an increase in supply o an increase in demand o a decrease in demand

Afirm is producing at minimum average total cost with its current plant. draw the firm's long-run average cost curve. label it. draw a point on the lrac curve at which the firm cannot lower its average total cost. draw the firm's short-run average total cost curve that is consistent with the point you have drawn. label it.g

Many potential buyers value high-quality used cars at the full-information market price of € p1 and lemons at € p2. a limited number of potential sellers value high-quality cars at € v1 ≤ p1 and lemons at € v2 ≤ p2. everyone is risk neutral. the share of lemons among all the used cars that might be potentially sold is € θ . suppose that the buyers incur a transaction cost of $200 to purchase a car. this transaction cost is the value of their time to find a car. what is the equilibrium? is it possible that no cars are sold