Consider the function f(x) = 2x³ 12x² 30x + 7 on the interval [-4, 7]. Find the average or mean slope of the function on this interval. By the Mean Value Theorem, we know there exists a c in the open interval (-4, 7) such that f'(c) is equal to this mean slope. For this problem, there are two values of c that work. Round answers to 3 decimal places. The smaller one is and the larger one is

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