Superman comic book. In August 2014, a 1938 comic book featuring the first appearance of Superman sold at auction for a record price of $3.2 million. The comic book originally cost
(In the summer of 2010, a family faced foreclosure on their mortgage. As they were packing, they came across some old comic books in the basement, and one of them was a copy of this first Superman comic. They sold it and saved their house.)
a. Find the function that satisfies this equation. Assume that
b. Estimate the value of the comic book in 2020
c. What is the doubling time for the value of the comic book?
d. After what time will the value of the comic book be $30 million, assuming there is no change in the growth rate?
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