Producer surplus is the difference between the lowest price a firm is willing to accept for a product and the price it actually receives for the product

In an economy with ________, there are more prices than in an economy with ________

A) barter; money B) fiat money; commodity money C) fiat money; barter D) money; barter

The marginal product of labor (MPL) can be calculated from the following ________

A) the labor share of income and the average output per unit of labor B) the labor share of income and average labor per worker C) output and labor D) the labor share of income and output E) none of the above