Adecision is made at the margin when each alternative considers
a) a different trade-off than the others.
b) where the most costly alternative will be.
c) what the “all or nothing” alternative will be.
d) cost and benefit ranked in progressive units.

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.)

The questions of economics address which of the following ? check all that apply

The common stock of ncp paid $1.35 in dividends last year. dividends are expected to grow at an annual rate of 5.30 percent for an indefinite number of years. a. if ncp's current market price is $22.57 per share, what is the stock's expected rate of return? b. if your required rate of return is 7.3 percent, what is the value of the stock for you? c. should you make the investment? a. if ncp's current market price is $22.57 per share, the stock's expected rate of return is