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Functions as Models
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Identifying Quadratic Functions
Which of the following is not a quadratic function?
A
y = 3x^2 + 3x + 9
B
y = 6x^2 + 5x^3 + 8
C
f(r) = r^2
D
y = x^2
E
f(h) = 4h^2 - 5h
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