A 13-year, 6 percent coupon bond pays interest semiannually. The bond has a face value of $1,000. What is the percentage change in the price of this bond if the market yield to maturity rises to 5.7 percent from the current rate of 5.5 percent?

DO NOT USE EXCEL OR FINANCIAL CALCULATOR SHOW WORK TO SOLVE THIS PROBLEM i want to know how to get price of bond and i need full equation to solve this problem.

The semiannual, 8-year bonds of Alto Music are selling at par and have an effective annual yield of 8.6285 percent. What is the amount of each interest payment if the face value of the bonds is $1,000?

I got r(8.45%) to use EAR but i do not know how to get PMT without using excel or financial calculator.