In 2000, the P/E ratio of the stock market reached about 10. If you assume that these corporations will grow roughly at the overall economy's (GDP) growth rate of 4.5% per year, what should investors have reasonably expected in terms of likely future rate of return implied by the stock market's level? Please show work!

An insurance company offers a retirement annuity that pays $100,000 per year for 15 years, growing at an "inflation-compensator" rate of 3%, and sells for $806,070. what is the interest rate? Please show work on paper!