James McCulloch purchased a 20-year U.S. Treasury bond four years ago for $8,500. The bond paid 3.500 percent annual interest. Four years later he sold the bond for $8,580.
(a) What is the annual interest amount for the bond? (Round your answer to 2 decimal places.)
Annual interest $
(b) What is the total interest Mr. McCulloch earned during the four-year period?
Total interest $
(c) What is the total return for Mr. McCulloch's bond investment?
Total return $