Break-Even Analysis

10-11 is a practice problem for an upcoming exam. I have charts and charts of garbage numbers, and I don't understand what exactly I need to do for a break-even analysis. Please work through the problem and show me how you did it. Thank you.

Cost Function

Please assist with this problem: You own a small firm that manufactures and sells a standardized product in a marketplace that closely resembles perfect competition. You have estimated your total cost function at C(Q) = Q + 3Q2, and your marginal cost function as MC = 1 + 6Q. In trying to plan for the upcoming year, you estimate there is a 75 percent chance the market price will be $100 and a 25% chance it will be $120. My questions are: - Calculate the expected market price. Show calculations please. - How many units should you produce to maximize expected profits? Again, please step me through this. - What is your expected profit or loss? Again, show work. Thank You

Cost Benefit

Please explain in economic terms why a used car that is only six months old and has been driven only 5,000 miles typically sells for 20 percent less than a new car with the same options.

Cost benefit Analysis for public projects

Attached are two problems that I can't figure out. They are not for homework but my instructor said that it would be helpful to understand them in preparation for the final. If you have time, please work 12.7 and 12.8 and show me how you did them. The text is fundamentals of engineering economics (Chan S. Park). Thank you.

Labor and Rent Question

A manager hires labor and rents capital equipment in a competitive market. The current wage is $6.00 per hour and capital is rented at $12.00 per hour. If the marginal product of labor is 50 units of output per hour and the marginal product of capital is 75 units of output per hour, is the firm using the cost-minimizing combination of labor and capital? If not, should the firm increase or decrease the amount of capital used in its production process?