Show work and reasoning by writing the equation and working it down to the final answer

A$.$ An investor is considering purchasing a bond with a $5\mathrm{.}5\%$ coupon interest rate, a par value of $$1,000,$ and a market price of $$927\mathrm{.}50.$ The bond will mature in $9$ years. Based on this information, answer the following questions:

What is the bond's current yield?

What is the bond's approximate yield to maturity?

B$.$ How much will a $$1,000$ savings bond cost when you initially purchase it$?$ Then, assuming the bond earns $4\mathrm{.}17\%$ annually, about how long will it take for the bond to reach its stated face value?