Suppose the domestic supply (QS) and demand (QD) for skateboards in the United States is represented by the following set of equations:QS = -60 + 3PQD = 390 - 2PCalculate the change in producer surplus when the United States engages in free trade and imports skateboards from the rest of the world at a per unit price of $75.

In the table above, the size of the labor force is

A) 80 million. B) 46 million. C) 42 million. D) 40 million. E) 34 million.

Under the National Banking Acts of 1863 and 1864, the U.S. monetary system

(a) experienced drastic changes. (b) played a role in helping the Union finance the Civil War. (c) permitted, for the first time, the federal government to charter banks. (d) protected the rights of states to be the only entities to charter banks.