Consider the function f(x) = 5x3 - 6x on the closed interval [2, 7). Find the exact value of the slope of the secant line connecting (2, f(2) ) and (7, f(7)). m = By the Mean Value Theorem, there exists c in (2, 7) so that m = f'(c). Find all values of such c in (2, 7). Enter exact values. If there is more than one solution, separate them by a comma. C Check