Question 7 of 10 What is the result of substituting for y in the bottom equation?
y = x-7
y = x^2 + 2x - 4
A. x- 7 = x2 + 2x - 4
B. y = (x - 7)2 + 2(x – 7) – 4
O c. x- 7 = x2
O D. y = x2 + 2x - 4 - (x - 7)

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