Question 1040022
<font face="Times New Roman" size="+2">


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 10000e^{0.04t}\ =\ 15000]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ e^{0.04t}\ =\ 1.5]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \ln\left(e^{0.04t}\right)\ =\ \ln(1.5)]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 0.04t\ =\ \ln(1.5)]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ t\ =\ \frac{\ln(1.5)}{0.04}]


is the exact answer.  Use your calculator to find an approximation to whatever precision you desire.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  

</font>