Please help me with these practice questions that i am having trouble with. I appreciate the help in understanding them. These are 3 seperate questions

Diamond Corporation is planning a bond issue with an escalating coupon rate. The annual coupon rate will be 3.7% for the first 4 years, 4.7% for the subsequent 5 years, and 5.7% for the final 3 years. If bonds of this risk are yielding 4.7%, estimate the bond's current price. Face value of the bond is $1,000. (Round your answer to the nearest cent.) A BCE bond has 17 years until maturity and a coupon rate of 6.3% payable annually, and sells for $1,070. Face value of the bond is $1,000. a. What is the current yield on the bond? (Round your answer to 2 decimal places.) Current yield % b. What is the yield to maturity? (Round your answer to 2 decimal places.) Yield to maturity % Suppose that you buy a 1-year maturity bond for $950 that will pay you $950 plus a coupon payment of $55 at the end of the year. a. What real rate of return will you earn if the inflation rate is 2.5 percent? (Round your answer to 2 decimal places. Use minus sign to enter negative real rate of return, if any.) Real rate of return % b. What real rate of return will you earn if the inflation rate is 3.5 percent? (Round your answer to 2 decimal places. Use minus sign to enter negative real rate of return, if any.) Real rate of return % c. What real rate of return will you earn if the inflation rate is 5.5 percent? (Round your answer to 2 decimal places. Use minus sign to enter negative real rate of return, if any.) Real rate of return % d. What real rate of return will you earn if the inflation rate is 7.5 percent? (Round your answer to 2 decimal places. Use minus sign to enter negative real rate of return, if any.) Real rate of return %