Labor productivity is calculated by dividing GDP by

Your textbook discusses "dry" counties in the U.S. What is a dry county?

A) A county where rainfall is below the national average B) A county that experiences no rainfall C) A county in which it is illegal to produce, purchase and sell alcohol D) A county in which only dry gin is consumed

The figure above shows the market for transportation services, which produces an external cost due to the air pollution that is created. Suppose that the government decides to introduce a pollution tax

What is the tax per vehicle mile that will achieve the efficient outcome? A) $2 B) $4 C) $6 D) $8