Answer the following questions about the function whose derivative is f'(x) = a. What are the...

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Answer the following questions about the function whose derivative is f'(x) = a. What are the critical points of f? b. On what open intervals is f increasing or decreasing? c. At what points, if any, does f assume local maximum or minimum values? x(x-5) x+6 9 **-6. Answer the following questions about the function whose derivative is f'(x) = a. What are the critical points of f? b. On what open intervals is f increasing or decreasing? c. At what points, if any, does f assume local maximum or minimum values? x(x-5) x+6 9 **-6.