Please solve this for me

Ax^2 + bx + c = 0
x^2 - 5x = 14
x^2 - 5x - 14 = 0
a = 1
b = -5
c = -14

Among the choices the one that  best describes her prediction is "extrapolation, because a key that is 12 keys from middle C is outside the data set". 

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