Please help with these questions!

A 4-year bond with 14 percent coupon can be purchased for $1,200. What is its yield to maturity, if the face value of the bond is $1,000? The value of a dollar on January 1, 2014 is equivalent to $0.17 in 1971. What is the rate at which inflation has reduced the purchasing power of dollar between 1971 and 2014? Consider three bonds with 8 percent coupon rates, all selling at the par value of S1,000. The short-term bond has a maturity of 2 years, the intermed iate-term bond has a maturity of 8 years, and the long-term bond has a maturity of 20 years. a) What will happen to the price of each bond if the yields increase to 9 percent. b) What will happen to the price of each bond if the yields decrease to 7 percent