What is the percentage of income received by the lower three quintiles on line J?

The price elasticity of demand between rifles and bullets is likely to be

a. negative, because the goods are complements b. positive, because the goods are complements c. negative, because the goods are substitutes d. positive, because the goods are substitutes e. 0, because the goods are not substitutes

Under a tradable pollution permits system (cap and trade), government _____________ the amount of pollution, ___________________ what the price to pollute will be.

A. knows; and polluters immediately know B. doesn't know; and polluters don't immediately know C. knows; but polluters don't immediately know D. doesn't know; but polluters immediately know