I have this question:

The market price of a bond is $875. The bonds have a 4.25% coupon rate paid annually and mature in six years. What is the yield to maturity for the bonds if an investor buys them at the $875 market price?

a.2.33%

b. 6.86% - correct answer

c.15.34%

d.2.30%

The market price of a bond is $875. The bonds have a 4.25% coupon rate paid semi-annually and mature in six years. What is the yield to maturity (expressed at an annual rate) for the bonds if an investor buys them at the $875 market price?

a.3.41%

b.5.72%

c.11.44%

d. 6.82% correct answer

How do you find the answer to these questions either by formulas or inputs in TI calculator?