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Question 1: At a given exchange rate what does a quota do to desired net exports? As a result of this change which curve in the open-economy model shifts and which direction does it shift? Question 2: If for some reason U.S. residents increase their purchases offoreign assets, then all else constant which curve in the market for foreign-currency exchange shifts and which direction does it shift? What happens to the exchange rate? Question 3: Use the money market to explain the interest-rate effect and its relation to the slope of the aggregate demand curve. Question 4: There are three factors that help explain the slope of the aggregate demand curve. Which two are less important? Why are they less important