With continuous compounding, a principal of P dollars accumulates to an amount A given by the equation A = Pert where r is the interest rate and t is the time in years. With  A = 2P,  the equation becomes 2P = Pert. Assume continuous compounding to find how long it takes a given amount to double at the given interest rate. (Round your answer to two decimal places.) r = 7%

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With continuous compounding, a principal of P dollars accumulates to an amount A given by the equation

A = Pert

where r is the interest rate and t is the time in years. With 

A = 2P,

 the equation becomes

2P = Pert.


Assume continuous compounding to find how long it takes a given amount to double at the given interest rate. (Round your answer to two decimal places.)

r = 7%
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