State any restrictions on the variables.
y ≠ 3
y ≠ 1
y ≠ –1
no restrictions are needed

The fraction that you have can be simplified
3y(y-1)/y-1,
we will simplify y-1 from both sides(they get cancelled)
and your answer is 3y, therefore, no restrictions are needed 

The answer is

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.