() 1) Let f(x)= 3x – 25.x3 +60r + 20 a) Use your calculator to graph this function. Choose the window for your graph so that you include all the major features of the graph. Copy the graph to the grid below. Label and scale the axes. Show key points found below. b) Find all the zeroes of the function. (Round answers to three decimal points. ) c) Give the coordinates of all extrema points and indicate if local maxima or minima.

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A: It is simple calculation.

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A: The Solution is given below

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