Can you help with the following questions based on macroeconomics? Please, see instructions below. Do not copy other contents.

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Please read the following premise and answer the questions below: The financial institutions such as finance companies, mortgage companies and banks serve as intermediaries among those with a surplus as opposed to those with a deficit establishing a capital injection market. I. Describe the responsibility of the financial system in the demand for investment compared to the supply of savings. II. Using the concepts of real interest rate and expected rate of return, compare the connection between saving and capital investment. III. Based on the macroeconomic theory, describe the connection of the financial market with the economic growth of a nation. IV. Describe and explain the dynamics that are expected to occur between the various development policies in the injection of capital as instruments to promote the sustainability, growth, and economic stabilization of a nation