Use a graphing calculator to find (a) the maximum value of f(x) and (b) the minimum value of f(x) for the indicated values of x. 3 f(x) = -0.4x²³ -0.5x² + 4x-5 where -6≤x≤4 (a) The maximum value of f(x) in the interval occurs when x (Round to two decimal places as needed.) and ya nd y.

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