Management Science Problems

I have attached files that you need. There are two Excel files, one is specifically for problem 3.9.

Finding the dimensions of x& y in modeling equation

if a farmer has 1000 yards of fencing to make 3 equal rectangular pens adjacent to the barn. Using the barn itself to form one of the sides that will not need fencing. so the 3 pens are the same size and share a common side, than what is the area of side x and what are the dimensions of x & y that maximize the entire enclosure? and what is the maximum are of the entire enclosure? Using x as the as the height and y as the width. I believe I have found the function of side x. I found the area to be A(x)= qx^2 + 500x. I think I did this right Help

How do I find the area of a ring?

I have a word problem that requires me to find the area of the ring and the area of the circle where the area between each concentric circle is r which is the same as the smallest circles radius. How can I find the radius and compare them to each other? Would I use the standard formula of a circle?

Need Help with Modelling and Simulation Problems

Please see attached 2 problems, 5.1 and 5.6.

Need Help With Modelling and Simulation Problems

See attached file for full problem description. 1. The Computer Gaming Company (CGC) plans on releasing a new product. It is a keyboard designed for hard core gamers. The total cost to produce and market this keyboard would be $250,000. It will cost $25 per keyboard for materials and assembly. The company plans on selling them for $65 each. a. Use an algebraic procedure to determine the break even point. b. Create a spreadsheet to help solve this problem. c. How many keyboards does the company have to sell in order to break even? d. A sales forecast of 8,000 keyboards has been obtained. Assume that 8,000 keyboards are made and sold. How large can the marginal production cost be ... click for more