Greg n. mankiw principles of macroeconomics 5th:

At a roundabout, you must yield to a. already in the roundaboutb. entering the roundaboutc. only if their turn signal is ond. only if they honk at you

Quick calculate the roi dollar amount and percentage for these example investments. a. you invest $50 in a government bond that says you can redeem it a year later for $55. use the instructions in lesson 3 to calculate the roi dollar amount and percentage. (3.0 points) tip: subtract the initial investment from the total return to get the roi dollar amount. then divide the roi dollar amount by the initial investment, and multiply that number by 100 to get the percentage. b. you invest $200 in stocks and sell them one year later for $230. use the instructions in lesson 3 to calculate the roi dollar amount and percentage. (3.0 points) tip: subtract the initial investment from the total return to get the roi dollar amount. then divide the roi dollar amount by the initial investment, and multiply that number by 100 to get the percentage.

Here are the expected cash flows for three projects: cash flows (dollars) project year: 0 1 2 3 4 a − 6,100 + 1,275 + 1,275 + 3,550 0 b − 2,100 0 + 2,100 + 2,550 + 3,550 c − 6,100 + 1,275 + 1,275 + 3,550 + 5,550 a. what is the payback period on each of the projects? b. if you use a cutoff period of 2 years, which projects would you accept?