Help! Pls in need of some Help.

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

Ineed i been stuck on this question since yesterday

Draw a scaled copy of the circle using a scale factor of 2