Find the equation of the tangent line to the graph of f at the given point.f(x) = x2 + 5x at (4, 20)
A. y = 13x - 32
B. y = 2x - 5
C. y = 13x - 72
D. y = 2x + 5
Answer: A
Mathematics
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A. 
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A. 13
B. 
C. 0
D. -13
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