Please help with this practice question.

\fThe figure above shows the domestic demand and supply for 5 1b. bags of sugar in the United States. Under free trade the world price of a bag of sugar is $2.10, but there is a $0.50 tariff imposed on bags that are imported into the U.S. Under free trade bags are imported into the U.S., and with the tariff bags are imported into the U.S