Friday
November 21, 2014

Homework Help: math exponential

Posted by Anonymous on Monday, January 19, 2009 at 3:47pm.

5 e^-(t/5^2) = 1.5
e^-(t/125) = .3
e^(t/125) = 1/.3 = 3.3333
t/125 = ln 3.3333
t = 150.5

can some one please explain why it's 1/.3 and where the one comes from and where the negative sign goes.

Steps 2 to 3 is what i'm talking about

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