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Question: 1 point let fxx2 6x 8 a what...

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(1 point) Let f(x)x2 - 6x - 8. (a) What is the slope of the tangent line to the graph of f at x = 82(Use the formula for the derivative of a quadratic.) f18) = (b) At which x does f have a maximum value (highest point)? (c) What it the maximum value of f? (d) What is the slope of the tangent line at the maximum value? Slope =
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