Please show work on each problem. I appreciate the help.

The M. Company's bonds mature in 7 years, have a par value of $1,000, and make an annual coupon payment of $70. The market interest rate for the bonds is 8.5%. What is the bond's price? E. Enterprises' noncallable bonds currently sell for $1,165. They have a 15-year maturity, an annual coupon of $95, and a par value of $1,000. What is their yield to maturity? S. Inc.'s bonds currently sell for $1,280 and have a par value of $1,000. They pay a $135 annual coupon and have a 15-year maturity, but they can be called in 5 years at $1,050. What is their yield to call (YTC)? Consider a zero-coupon bond with 20 years to maturity. The price will this bond trade if the YTM is 6% is closest to