(Solving for i) In March 1963, Iron Man was introduced in issue 39 of the comic book Tales of Suspense. The original price for that issue was 12 cents. By March 2016, 53 years later, the value of this comic book, given the condition it’s in, had risen to

$10,000. What annual rate of interest would you have earned if you had bought the comic in 1963 and sold it in 2016?