Use the graph to determine the function's domain and range.
A. domain: (-?, ?)
range: y = 1
B. domain: x = 
range: y = 1
C. domain: (-?, ?)
range: (-?, ?)
D. domain: x = 
range: (-?, ?)
Answer: C
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A. f-1(x) = 
B. Not a one-to-one function
C. f-1(x) = 
D. f-1(x) = 
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