Rearranging an Energy Decay Equation

[einsteinette]

Hi, I'm having trouble rearranging this equation, solving for E(t):

E(t) = Eo*e^(-t/T)

My attempt:

ln E(t) = Eo * (-t/T) and now I'm stuck.

Any help would be appreciated!

 

[kuruman]

The logarithm of the right side is incorrect.

What is the logarithm of a product?
What is the logarithm of e raised to some power?

Please review the answers to these two questions.