X$=2!!!$

A $100-$year corporate bond has a coupon rate of $x\%$ with monthly payments. If interest rates drop to $4\%$ on similar bonds, then what is the value of the bond in the marketplace?

A $30-$year annual bond is offered at $x\%.$ After that the buyer of the bond sells the bond to someone else, but in between interest rates rose to X$\mathrm{.}5\%.$ Why is the first buyer of the bond upset with what the second buyer of bond is willing to pay?

A $10-$year corporate bond has a coupon rate of $x\%$ with annual payments. If the current value of the bond in the marketplace is $$900,$ then what is the Yield$-$to$-$Maturity $($YTM$)?$