Converting exponential equations into logarithmic functions

[searchfgold6789]

Hi,

I am currently in Algebra II and finishing up the year. My assignment was to plot some points, find the best fitting exponential function using graphing technology, and then fins the corresponding logarithmic function.

I did all this and arrived with the exponential function f(x) = 56.57e^-x.

I tried doing something like f(x) = 56.57ln -x, but when I substitute something for x the rsult is not the same.

There are no instructions in my lesson on how to convert these types of functions... so thank you very much for your help!

 

[searchfgold6789]

Same as f(x) = 56.57 / e^x

Oh! Naturally! (if you'll pardon the expression). Thank you.