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

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