The Japanese manufacture tractors for rice paddies. They are smaller than most U. S. tractors and perfect for a weekend farmer who wants to tend to a small garden. The tractors are not sold in the United States through any authorized channels, yet they are available in the U. S. at prices below the manufacturer's suggested retail price. What is the term for how these Japanese tractors are being sold?

Match each definition in column 1 with a vocabulary word from column 2." some of the entries in column 2 do not apply costs which do not change with the level of output costs which change with the level of output the change in total costs resulting from an increase in output by one unit function showing the quantities of a particular good demanded at a range of price when the quantity supplied of a good is greater than the quantity demanded when the quantity demanded for a particular good is greater than the quantity supplied the price and quantity determined in a market when the supply equals the demand when revenue exceeds costs when costs exceeds revenue output where revenue = costs