If you are expecting just the answers, you've come to the wrong site!
Happy to help YOU determine the answers though.
Firstly, what do you understand by the terms "domain" and "range"?
Secondly, what is the definition of a "function"?
Also, what notation have you learnt to represent domain and range:
(1) the use of < or > signs ?
(2) the use of round and square brackets?
(3) something else?