In a competitive labor market, marginal revenue product equals marginal product times the wage rate

Using the information in the table above, what does GDP equal?

A) $365 billion B) $350 billion C) $650 billion D) $380 billion E) GDP cannot be calculated without information on the amount of investment.

The production possibilities frontier can be used to show all of the following except one. Which is the exception?

a. scarcity b. opportunity cost c. the law of increasing opportunity cost d. efficiency e. the best combination of goods and services for an economy