Ok Econ savages, I need you to watch these two videos first on how to do the foreign exchange graphs. I really want you to pay attention to the set up of the graphs and what causes the shift of the supply and demad for currency. After the video, Let's try to practice problem below. We will take it slow in the beginning, but will put everything together by next week.
https://www.youtube.com/watch?v=9DVYVfI81R8

https://www.youtube.com/watch?v=D41EuDh3epI

A United States firm sells $10 million worth of goods to a firm in Argentina, where the currency is the peso.
(a) How will the transaction above affect Argentina’s aggregate demand? Explain.
Argentina’s aggregate demand will fall because the purchase results in increased imports or decreased net exports, which are components of aggregate demand.
(b) Assume that the United States current account balance with Argentina is initially zero. How will the
transaction above affect the United States current account balance? Explain.
that the United States current account will be in surplus or increases because exports are recorded as a credit in the current account.
(c) Using a correctly labeled graph of the foreign exchange market for the United States dollar, show how
a decrease in the United States financial investment in Argentina affects each of the following.

 (i) The supply of United States dollars
Supply of U.s. decrease /leftward shift of the supply curve 
 (ii) The value of the United States dollar relative to the peso
The value of the dollar appreciates
(d) Suppose that the inflation rate is 3 percent in the United States and 5 percent in Argentina. What will happen
to the value of the peso relative to the United States dollar as a result of the difference in inflation rates?   the peso will depreciate against the dollar
Explain. 
that the higher inflation rate in Argentina makes U.S. goods less expensive (or more attractive) than Argentinean goods