I need a big help in sovling these problems. Please please write down the formulas clearly, and work out each problem clearly and show me the realationships how you got there. I would really apprecite it if you can help me with all problems.

For problems 6-9, recall that the yields are quoted at annual rates! 6. U.S. Treasury bills are pure-discount bonds sold with face values of $10,000. Calculate the price for a Treasury bill that: a. matures in 3 months when the market yield is 4 percent. b. matures in 6 months when the market yield is 2 percent. c. matures in 9 months when the market yield is 7 percent. d. matures in 1 week when the market yield is 5 percent 7. Calculate the yield on a 3-month Treasury bill sold at $9,878.76. 8. Calculate the price of the following 2-year bonds when the market yield is 4 percent and the bonds have $1000 face values and annual coupons of a. 3 percent b. 4 percent c. 5 percent 9. Repeat Problem 8, but assume that the same coupons are paid in two semi-annual installments