For the given quadratic function, tell whether the graph opens up or down and whether the graph is wider, narrower, or the same as the graph of f
= x2.f(x) = x2 + 12
A. Up; wider
B. Up; narrower
C. Down; same
D. Up; same
Answer: D
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?
A. (0, ?) B. [0, ?) C. (-?, 0] D. (-?, ?)
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What will be an ideal response?