Question 1204921
$3250 is invested at 5.0%  compounded continuously.  How long will it take for the balance to reach $6500?
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6500 = 3250*e^(.05t)
e^(.05t) = 2
.05t = ln(2)
t = ln(2)/.05 =~ 13.86 years --- (if it's 5% per year)