Questions attached below:

a. In 2020, Wakanda suffers from a 2% depreciation due to Covid-19. If this depreciation leads to 3% increase in exports and 2% decline in imports, based on the Marshall-Lerner conditions, by how much does the trade balance change (in percentage)? b. In 2015, Wakanda was also suffering from a trade deficit. How could depreciation and fiscal policy solve this problem without "overheating" the economy? Explain and illustrate using the graph for open economy goods market equilibrium and the trade balance. C. In 2022, countries worldwide begin recovering from Covid-19, and this has increased foreign demand for vibranium, a strong metal that is native to Wakanda. Explain and illustrate using using the graph for open economy goods market equilibrium and the trade balance