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September 16, 2014

September 16, 2014

Posted by **Patty** on Monday, April 9, 2012 at 6:55pm.

- math -
**Steve**, Tuesday, April 10, 2012 at 10:25amp = ae^kt

500 = 200e^100k

2.5 = e^100k

ln 2.5 = 100k

k = ln2.5/100

p = 200e^(ln2.5/100 t)

= 200*2.5^t/100

to double,

2 = 2.5^t/100

ln 2 = (t/100)ln2.5

t = 100 * ln2/ln2.5 = 75.65 minutes

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