at 9:00, paula has x cups of food in a container for her dog. paula pours a 2 1/2 cup box of food into the container. then she removes 3/4 cup of food to feed her dog. now there are 5 1/4 cups of food in the container. Write an equation that can be used to determine the number of cups, x, of food in the container at 9:00. Write the solution to your equation.