Your college newspaper, the collegiate investigator, sells for 90¢ per copy. the cost of producing x copies of an edition is given by c(x) = 30 + 0.10x + 0.001x2 dollars. (a) calculate the marginal profit function, in dollars per copy.

There is a cost associated with each source of financing. discuss the cost of debt, preferred stock, common stock, and retained earnings in detail. which source of financing is typically less expensive? why? why do financial managers try to determine the optimal capital mix? be specific.

You are thinking of making your mansion more energy efficient by replacing some of the light bulbs with compact fluorescent bulbs, and insulating part or all of your exterior walls. each compact fluorescent light bulb costs $4 and saves you an average of $2 per year in energy costs, and each square foot of wall insulation costs $1 and saves you an average of $0.20 per year in energy costs.† your mansion has 150 light fittings and 3000 sq ft of uninsulated exterior wall. to impress your friends, you would like to spend as much as possible, but save no more than $750 per year in energy costs (you are proud of your large utility bills). how many compact fluorescent light bulbs and how many square feet of insulation should you purchase? how much will you save in energy costs per year? (if an answer does not exist, enter dne.)

For 2016, gourmet kitchen products reported $22 million of sales and $19 million of operating costs (including depreciation). the company has $15 million of total invested capital. its after-tax cost of capital is 10%, and its federal-plus-state income tax rate was 36%. what was the firm’s economic value added (eva), that is, how much value did management add to stockholders’ wealth during 2016?