The noise level, N, of a sound in decibels is given by
N=f(I)= 10log(I/I0) <---the 0 in the (I/I0) is a sub 0

where I is the intensity of the sound and I0 (sub 0) is a constant.
Find and interpret f-1(N) the inverse

I don't know how to even go about doing this??

You have an equation like this:



so they want you to work this so that you get I all by itself. The only trick here is to use the fact that if

then

So would the I/I0 become just and I?

I don't follow you. In the equation I gave you c = (I/Io)