Linda is buying boxes of ice cream sandwiches for her class party. She has to decide how many boxes she should purchase. A formula for this scenario is: z=ax/y z=number of boxes a=number of bars each student will eat x=number of students at the party y=number of ice-cream bars per box Linda has 24 students in her class and she wants each student to have 3 ice-cream sandwiches. If there are 12 sandwiches in a box, how many boxes should Linda buy?