3. The impossible trinity Suppose the government of Iraq is deciding what kind of monetary policy and exchange rate regime to choose. The government wants to ensure stability in international trade and investment by pegging the Iraqi dinar to the U. S. dollar. Which of the following policy choices will achieve this goal? Check all that apply. Controlling the interest rate in the country without imposing restrictions on foreign exchange trading Controlling the interest rate in the country and imposing restrictions on foreign exchange trading Maintaining capital controls with no independent monetary policy

Total marketing effort is a term used to describe the critical decision factors that affect demand: price, advertising, distribution, and product quality. define the variable x to represent total marketing effort. a typical model that is used to predict demand as a function of total marketing effort is based on the power function: d = axb suppose that a is a positive number. different model forms result from varying the constant b. sketch the graphs of this model for b = 0, b = 1, 0< b< 1, b< 0, and b> 1. (we encourage you to use excel to do this.) what does each model tell you about the relationship between demand and marketing effort? what assumptions are implied? are they reasonable? how would you go about selecting the appropriate model?