I only need questions 3-9 pls help me and I’m sorry I asked a lot. I also need the formulas shown, This is my first time asking a question btw so once again sorry and thx for helping!

Volume of a cylinder with a radius of 13 in and height of 30 in

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Factor the expression using gcf 9b+45