PLEASE HELP A. Use composition to prove whether or not the functions are inverses of each other. B. Express the domain of the compositions using interval notation.

Part A : see composition process below

Part B :    

Step-by-step explanation:

Part A

Let's use the composition of functions to find if they give the identity :  thus proving they are the inverses of each other:

So we have proved they are the inverses of each other.

Part B

Given that the composition is:

the Domain must exclude x=0, for which this quotient is undefined.

The Domain is then:

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step-by-step explanation: