Pls answer questions below. I will appreciate your help :)

The current zero-coupon yield curve for risk-free bonds is as follows: Maturity (years) YTM 4.97% 5.45% 5.72% 5.95% 6.01% What is the price per 100 face value of a four year, zero-coupon, risk-free bond? The price per 5100 face value of the four year, zero-coupon, risk-free bond is (Round to the nearest cent.) The current zero-coupon yield curve for risk-free bonds is as follows: Maturity (years) YTM 4.99% 99% 603% 5.48% 5.73% 5.91% 6.03% What is the risk-free interest rate for a five year maturity? The risk-free interest rate for a five-year maturity is % (Round to two decimal places.) Suppose a ten-year, $1,000 bond with an 8.1% coupon rate and semiannual coupons is trading for $1,035.77 a. What is the bond's yield to maturity (expressed as an APR with semiannual compounding)? b. If the bond's yield to maturity changes to 9.5% APR, what will be the bond's price? a. What is the bond's yield to maturity (expressed as an APR with semiannual compounding)? The bond's yield to maturity is %. (Round to two decimal places.)