Answer:
An increase in imports into the United Statesand a decrease in exports to Mexico, which will cause a decrease in aggregate demand and real GDP.
Step-by-step explanation:
Exchange rate is the rate at which one currency can be exchanged for another. When a currency appreciates it becomes stronger against the other currency.
For example if the dollar becomes stronger than the peso, the dollar will be able to buy more pesos than before. The pesos will also be able to buy less dollars than before.
As Mexican products are now cheaper there will be increased imports into the United States.
US goods will be more expensive for Mexico, so they will buy less of US goods. United States exports will reduce.
This will eventually lead to a reduction in aggregate sand and real GDP since US sale of US goods has declined.