Everything else held constant, if aggregate output is to the ________ of the IS curve, then there is an excess ________ of goods which will cause aggregate output to fall

The marginal social cost of producing a good or service is the

A) cost of producing an additional unit borne by the producer. B) cost of producing an additional unit borne by people other than the producer. C) sum of the marginal private cost and the marginal external cost. D) same as marginal external cost. E) sum of the marginal private cost and the marginal external cost minus the marginal social benefit.

Suppose one firm accounts for 55 percent of the global market share for a product, while 147 other firms account for the remaining 45 percent of the market

With such a large number of buyers and sellers, is this market likely to be competitive? Explain your answer.