If the tourist beside you bought two refrigerator door magnets and four keychains and paid less than or equal to 100 peso. Graph and solve using representation

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students