Who wants to be my GF?

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

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

What is always true about a positive integer raised to a negative odd power?