Assume the following: you have $10,000 to invest; the current spot rate of British pounds is $1.800; the 90-­‐day forward rate of the pound is $1.780; the annual interest rate in the U. S. is 4%; the annual interest rate in the U. K. is 6%. (a) Where would you invest your $10,000 to maximize your yield with no foreign exchange risk? (b) Given the spot rate, the forward rate, and the U. S. interest rate, what is the equilibrium U. K. interest rate?

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.)

(30 total points) suppose a firm’s production function is given by q = l1/2*k1/2. the marginal product of labor and the marginal product of capital are given by: mpl = 1/ 2 1/ 2 2l k , and mpk = 1/ 2 1/ 2 2k l . a) (12 points) if the price of labor is w = 48, and the price of capital is r = 12, how much labor and capital should the firm hire in order to minimize the cost of production if the firm wants to produce output q = 18?

How does the federal reserve stabilize and safeguard the nation’s economy? (select all that apply.) it distributes currency and oversees fiscal conditions. it implements american monetary policy. it regulates banks and defends consumer credit rights. it regulates and oversees the nasdaq stock exchange.