A monopolistic competitor maximizes profit by producing 600 units of output at a price of $24 per unit. If the average cost of production is $18, the monopolistic competitor earns a profit of:

Consider a closed economy without the government. If the savings rate in the economy is 20% and the aggregate savings is $10,000, the aggregate consumption in the economy is:

A) $37,000. B) $45,000. C) $10,000. D) $50,000.

Which statement is TRUE about Mr. McConaughey's marginal utility from spending time with family and friends and breaking a sweat?

A) The marginal utility Mr. McConaughey gets from the first hour of spending time with his family is less than the marginal utility from the first hour of breaking a sweat. B) The marginal utility Mr. McConaughey gets from the third hour of spending time with his family is less than the marginal utility from the fourth hour of breaking a sweat. C) The marginal utility Mr. McConaughey gets from the fourth hour of spending time with his family is greater than the marginal utility from the fourth hour of breaking a sweat. D) The marginal utility Mr. McConaughey gets from the second hour of spending time with his family is greater than the marginal utility from the first hour of breaking a sweat.