PRE-CAL

Complete the table for the time t (in years) necessary for P dollars to triple when interest is compounded continuously at rate r. (Round your answers to two decimal places.)

R=2%
t=?

tried to plug in as A=Pe^rt since continiously

3=e^.02t ?
then take the ln of both sides?
(ln3/.02)=t?

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  1. can't see the table, but you have correctly solved for t.

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  2. yes, about 55 years

    10% doubles in about 7 years :)

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  3. the table is just that
    r 2% 4% 6% 8% 10% 12%
    t ? ? ? ? ? ?

    i will try that out then

    Thank you

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  4. ok this worked out great! thank you!

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  5. 3=e^rt

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