could you help with exercise E6-7,8,10

E6-7 (L05) (Computation of Bond Prices) What would you pay for a $100,000 debenture bond that matures in 15 years and pays $5,000 a year in interest if you wanted to earn a yield of: (a) 4 %? (b) 5%? (c) 6 %? E6-8 (L05) (Computations for a Retirement Fund) Clarence Weatherspoon, a super salesman contemplating retirement on his fifty-fifth birthday, decides to create a fund on an 8% basis that will enable him to withdraw $20,000 per year on June 30 beginning in 2021 and continuing through 2024. To develop this fund, Clarence intends to make equal contributions on June 30 of each of the years 2017-2020. Instructions (a) How much must the balance of the fund equal on June 30, 2020, in order for Clarence to satisfy his objective? (b) What are each of Clarence's contributions to the fund? E6-9 (L02) (Unknown Rate) LEW Company purchased a machine at a price of $100,000 by signing a note payable, which requires a single payment of $123,210 in 2 years. Assuming annual compounding of interest, what rate of interest is being paid on the loan? E6-10 (LO2) (Unknown Periods and Unknown Interest Rate) Consider the following independent situations. (a) Mike Finley wishes to become a millionaire. His money market fund has a balance of $92,296 and has a guaranteed interest rate of 10 %. How many years must Mike leave that balance in the fund in order to get his desired $1,000,000? (b) Assume that Sally Williams desires to accumulate $1 million in 15 years using her money market fund balance of $182,696. At what interest rate must Sally's investment compound annually