Just use the usual growth formula. It took 388 years, so
24e^(388r) = 4*10^12
In 1626, Peter Minuit traded trinkets worth $24 for land on Manhattan Island. Assume that in 2014 the same land was worth $4 trillion. Find the annual rate of interest compounded continuously at which the $24 would have had to be invested during this time to yield the same amount. (Round your answer to one decimal place.)
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