Amara makes four different visualizations shown below (marked a, b, c, d). according to good principles of visualization, and for what amara wants to show, which one of these would be considered the best visual 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