87. Which of the following is an equation of the line tangent to the graph of f(x) = x² + 2x² at the point where f'(x)=1? (A) y=8x-5 (B) y=x+7 (C) y=x+0.763 (D) y=x-0.122 (E) y=x-2.146

87. Which of the following is an equation of the line tangent to the graph of f(x) = x² + 2x² at the

point where f'(x)=1?
(A) y=8x-5
(B) y=x+7
(C) y=x+0.763
(D) y=x-0.122
(E) y=x-2.146

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