Mrs. Nava needs 9 1/2 quarts of ice cream to make a dessert to be served at her daughter's birthday party. The flavor of ice cream that Mrs. Nava needs only comes in I-gallon containers. How many I-gallon containers of ice cream will Mrs. Nava need to purchase in order to have at least 9 1/2 quarts of ice cream and as little left over as possible?