Using a graph representing the market for loanable funds, (1) Show and explain what happens to interest rates and the level of saving & investment if Congress passed a bill(法案) by effectively regulating the financial system, the bill increases savers' confidence in the financial system. (2) Show and explain what happens to interest rates and the level of saving & investment if Congress passed a bill by requiring firms to comly with strict regulations, the bill increases the costs of investment. 以上两问分别作图分析~