These problems involve advanced Algebra II problems. I am 100% clueless on all four of these problems... I am in Algebra II honors, top of the class.

I would VERY much appreciate it, if you uploaded your work via a scanner or w/e, so I can view it. If you can't do that, I need you to explain your answers.

Problems:

7. If 1200 cm^2 of material is available to make a box with a square base and an open top. Find the largest possible volume of the box. Use the following steps:

a.) Draw a picture

b) Find the volume in terms of x and h

c) Find the surface area in terms of x and h. Then solve for h in terms of x.

d) Find the volume in terms of x

e) To find max, solve the following equation derived from calculus: 1200-3x^2=0

f) Find h

g) Find V

Here is the other three problems in image form: