a)What rate of interest compounded annually is needed to make an investment of $6,500 accumulate to an amount of $7166.25 at the end of two years? b) How long will it take for the initial amount to double, compounded annually at the rate in (a) above?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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a)What rate of interest compounded annually is needed to make an investment of $6,500 accumulate to an amount of $7166.25 at the end of two years?

b) How long will it take for the initial amount to double, compounded annually at the rate in (a) above?

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