SOLUTION: The amount A in an account after t years from an initial principle P invested at an annual rate r compounded continuously is given by A=Pe^r^t where r is expressed as a decimal. Ho

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: The amount A in an account after t years from an initial principle P invested at an annual rate r compounded continuously is given by A=Pe^r^t where r is expressed as a decimal. Ho      Log On


   



Question 79515: The amount A in an account after t years from an initial principle P invested at an annual rate r compounded continuously is given by A=Pe^r^t where r is expressed as a decimal. How many years will it take an initial investment of $1,000 to grow to $1,700 at the rate of 4.42% compounded continuously?
Answer by stanbon(75887) About Me  (Show Source):
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The amount A in an account after t years from an initial principle P invested at an annual rate r compounded continuously is given by A=Pe^r^t where r is expressed as a decimal. How many years will it take an initial investment of $1,000 to grow to $1,700 at the rate of 4.42% compounded continuously?
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A=Pe^rt
1700 = 1000e^(0.0442t)
1.7 = e^(0.0442t)
Take the natural log to get:
0.0442t= ln(1.7)
t = 12.0052
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Cheers,
Stan H.