please solve the bond's yield maturity, the maturity at 16 years, and 4 years. Thank you.

(Vield to maturity) A bond's market phce is 5650 I has a $1,000 par value, will mature in 8 years, and has a coupon interest tate of 12 percent annow interest, but makes is afterest poyments semannualy What is the bonds yeld 10 maturify? What happens to the bonds yela to maluarty at the bend mutures in 16 years? What it inatures in 4 years? The bonds yiold 90 makarty it a matures in 8 years is (fiound to two docimal places)