A coin sold at auction in 2017 for $3.987,500. The coin had a face value of $15 when ift was issued in 1785 and had previously been sold for $290,000 in 1969 At what annual rate did the coin ap (Do not round intermediate calculations and enter your answer as a percent What annual rate did the 1969 buyer earn on his purchase? (Do not round decimal places, e.g., 32.16.) Do not round intermediate calculations and enter your answer as a percent a. preciate from its first minting to the 1969 sale? b. diate calculations and enter your answer as a percent rounded to 2 c. At what annual rate did the coin appreciate from its first minting to the 2017 sale? rounded to 2 decimal places, e.g., 32.16.) a. Rate of return from 1785 to 1969 b. Rate of return from 1969 to 2017 c. Rate of return from 1785 to 2017