<PRE><B>Question 145286</B>
A = Pe^rt,
where P is the initial investment and r is the interest rate. 
Maya has deposited $600 in an account that pays 5.64% interest, compounded continuously. How long will it take for her money to double? 
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2*600 = 600*e^(0.0564t)
2 = e^(0.0564t)
Take the natural log to get:
0.0564t = ln2
t = 12.2898... years
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Cheers,
Stan H.</PRE>