4. Joe Seniw bought a rare stamp for his collection. He agreed to pay & lump sum of $4, 000 after 5 years, Until then, he pays 6% simple interest semiannually. (A) Find the amount of each semiannual interest payment. (B) Seniw sets up a sinking fund so that enough money will be present to pay off the $4, 000. He wants to make annual payments into the fund. Starting now, the account pays 8% compounded annually. Find the amount of each payment