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September 18, 2014

September 18, 2014

Posted by **Oj** on Thursday, January 3, 2013 at 3:24pm.

- Calculus -
**Steve**, Thursday, January 3, 2013 at 7:05pmA = P*e^kt

4800 = P*e^2k

19000 = p*e^4k

Now, 4800/p = e^2k, so

19000 = p*(4800/p)^2

19000 = 4800^2/p

p = 4800^2/19000 = 1212

just for grins, what's k?

4800=1212*e^2k

e^2k = 3.958

2k = ln 3.958 = 1.376

k = 0.688

so, A(x) = 1212*e^.688t

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