To help pay for the cost of sport related injuries, the government imposes a tax on sellers of all sports equipment. Referring to the above figure, the area that equals the tax revenue the government raises from this tax on sports equipment is

If a firm wants to maximize profits it should

A) hire lots of capital and very little labor since labor needs to be trained. B) hire unskilled labor rather than skilled labor since unskilled labor is cheaper. C) equate the marginal physical product for each input to the price of the input. D) equate the marginal revenue product for each input to the price of the input.

The country of Bienmundo does not trade with any other country. Its GDP is $30 billion. Its government purchases $5 billion worth of goods and services each year and collects $6 billion in taxes. Private saving in Bienmundo amounts to $5 billion. What are consumption and investment in Bienmundo?

a. $17 billion and $8 billion, respectively. b. $19 billion and $6 billion, respectively. c. $19 billion and $8 billion, respectively. d. $17 billion and $6 billion, respectively.