please dont use excel, show your work, and explain thoroughly :)

5. What is the value of a $1000 par value bond, 8% coupon paid annually, 5 years to maturitv if investors require a 7.5% return? 6. What is the value of a $1000 par value bond, 8% coupon paid annually, 5 years to maturity if investors require an 8% return? 7. What will be the value of the bond in question 6 if the bond pays interest semi-annually? 8. What is the yield to maturity of a 5% coupon, $1000 par value 20 years to maturity bond trading at $877.00 ? 9. What is the yield to maturity of a 5% coupon, $1000 par value 20 years to maturity bond trading at $1077.00 ? 10. What is the yield to call of a 10% coupon, $1000 par value 20 years to maturity bond trading at $1077.00 if the bond is callable in 3 years at a premium of 1-year's interest