Consider the function f(x) = 7 - 6x on the interval [ - 5, 3). Find the average or mean slope of the function on this interval, i.e. f (3) - f( - 5) 3 - (-5) By the Mean Value Theorem, we know there exists a c in the open interval ( - 5, 3) such that f'(c) is equal to this mean slope. For this problem, there is only one c that works. Find it