It is __________ in the United States for a bank to require a business owner to put up some of his personal assets as "__________" collateral for a loan to his business

In the long run, if firms in a perfectly competitive market are incurring economic losses, then

A) new firms will enter the market and the price will rise. B) some firms will leave the market and the price will fall. C) some firms will leave the market and the price will rise. D) new firms will enter the market and the price will fall.

The problem of a double coincidence of wants refers to

A) the insatiability of wants in a free market economy. B) poorly-managed companies producing what consumers want only by coincidence. C) the necessity in a barter system of each trading partner wanting what the other has to trade. D) the likelihood that needs will not be the same as wants.