Airlines charge business travelers more than leisure travelers because there is a more:

"Because the United States is the largest economy in the world and can produce anything it needs domestically, there are no gains from trade for the United States." Is the previous statement correct or incorrect?

What will be an ideal response?

Which of the following is never negative?

a. marginal product b. average product c. production elasticity d. marginal rate of technical substitution e. slope of the isocost lines