a. Consider the Market for Loanable Funds in a closed economy. What would be the impacts of the following events on interest rates and investment. i. The government introduces a tax credit for savings accounts of up to $10,000 per year. ii. The government introduces a tax credit for savings accounts of up to $10,000 per year, and at the same time it repeals an investment tax exemption provision. iii. The government raises the tax rates. iv. The government issues bonds worth $10 billion. b. In a closed economy GDP = $1,400, private saving = $225, government budget deficit = $15, and government spending $25 (all numbers are in billions). Calculate national saving, taxes, and consumption