Problem 11-13 operating cash flow and leverage [lo4] a proposed project has fixed costs of $94,000 per year. the operating cash flow at 6,400 units is $88,800. ignore the effect of taxes. a. what is the degree of operating leverage? (do not round intermediate calculations and round your answer to 4 decimal places, e. g., 32.1616.) b. if units sold rise from 6,400 to 6,900, what will be the new operating cash flow? (do not round intermediate calculations and round your answer to 2 decimal places, e. g., 32.16.) c. what is the new degree of operating leverage? (do not round intermediate calculations and round your answer to 4 decimal places, e. g., 32.1616.)

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.)