Find the Inverse of an Exponential Function f(x) = (10^x+2)/10^x

Finding the inverse of a rational function. (domain issues not discussed). This one is tough.

Steps for actually finding inverse functions.
Step 1: Replace f(x) with y.
Step 2: Interchange x and y.
Step 3: Solve the resulting equation for y.
Step 4: Replace y with the notation for the inverse of f.
Step 5: (Optional) Verify that the functions are inverses.

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