need help to understand. please see attached

Consider the following. f( x) = - 2x2 + 7x + 7; Find f'(x). f ' ( x ) = Find f'(-1). F '( - 1 ) = Find the slope and an equation of the tangent line to the graph of the function fat the point (-1. ). slope equation Consider the following. 2 XL - qX = (x) Find f'(x). f' ( x ) = Solve f'(x) = 0 for x. (Enter your answers as a comma-separated list.) X = Find the points on the graph of f where the tangent line is horizontal. smaller x-value ( x , V ) = larger x-value ( x, V ) =