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For the function f(x) = 4x - 7x+6 a. Find f(x) using the definition of the derivative. b. Find the slope of the tangent

For the function f(x) = 4x - 7x+6 a. Find f(x) using the definition of the derivative. b. Find the slope of the tangent line at the point (2,8). c. Find the equation of the tangent line at the point (2,8). d. At what rate is this function changing when x = 1?

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