Question

Low on time help please

Answer 1

The answer that I had gotten to my answer was the third one.

Answer 2

The range is all of the possible outputs when considering a function. So, when you plug in 0, you get -1, when you plug in 1, you get -1/2, and when you plug in 2, you get 1. So, the range is {-1, 1}. Hope this makes sense!