please help this function questions with clear steps, thank you

4. Given the following two functions: f:iR)ER, f(x)=5x and g:[3,0D[>[0,DO[ g(x)=wa3 Determine whether the following composite functions can he formed. Clearly write your working steps. (a) f 03 (5 marks) O gf (5 marks) (C) f 03" (6 marks) If any of the above composite mction can be formed, then nd its composite Jnctiom and write down the domain and the codomain of your composite function. If it cannot be formed, give a counter-example to support your