Which of the following situations results from a ticket price to a concert set below the equilibrium price?
a. A long line of people wanting to purchase tickets to the concert

To compete in the automobile market, Tesla must make many strategic decisions such as whether to introduce a new car model, how to sell and service its cars, and where to advertise

At Tesla's Fremont, California plant, managers must decide on the monthly production quantities of their S and X models. In making this decision, the managers A) will choose to only produce the quantity of S and X models where marginal cost equals zero. B) will always decide on production quantities in which revenues are maximized. C) face no trade-off because the Fremont plant only produces these two models of the many Tesla models produced worldwide. D) face a trade-off, because producing more of one model means producing less of the other.

Interest rates are positive mainly because

A) of inflation. B) people tend to prefer the present to the future. C) people tend to prefer the future to the present. D) bankers are greedy.