Refer to the following graph.In New York City, the rent on many apartments is set below market rates. As a result, many people find that the only way to obtain an apartment is to make illegal payments to landlords. If Pc is the controlled rent, a best estimate of such "key" money is shown as:

The price elasticity of demand for oil is estimated at 0.05. This value means a 10 percent increase in the

A) quantity of oil demanded will result from a 0.5 percent increase in the price of oil. B) quantity of oil demanded will result from a 0.5 percent decrease in the price of oil. C) price of oil will increase the quantity of oil demanded by 0.5 percent. D) price of oil will decrease the quantity of oil demanded by 0.5 percent.

A firm uses labor and capital. To tell if the firm is technologically efficient, you

A) do not need to know the cost of labor or the cost of capital. B) need to know the cost of capital but not the cost of labor. C) need to know the cost of labor and the cost of capital. D) need to know the cost of labor but not the cost of capital.