help please

Assume the average return on mid-cap equities was 12.9% over the past 50 years. OIf the average risk free rate was 3.1% over that period, what is the historical risk premium for mid-cap stocks? 11.80%8.80%13.80%9.80%10.80% Malcom bought an 8% bond price at 95% of par that had 10 years until it matures. $1 year later the yield to maturity on this bond is 8.2%. \$What return did he earn on this bond? 16.38% 7.38% 12.38% 10.38% 11.38% A stock has had returns of 15 percent, 2 percent, 11 percent, and -6 percent over the last four years. What is the geometric average return over this period? 3.45%1.00%3.00%2.00%7.67% Buffy purchased a 20 year 19.5% bond at par 1 year ago. Today, she sold the bond at 115% of par. What was her holding period return? 29.50%38.50%34.50%33.50%32.50%