The government has imposed a tax on the market shown, and as a result, the equiLiBrium quantity has declined from 80 to 40. What does $10 represent?
1) $10 is the amount of tax imposed on each unit of the good
2) $10 is the price of the good after the tax is imposed
3) $10 is the total revenue collected from the tax
4) $10 is the cost of producing each unit of the good