need help to solve, please see attached

You are given the graph of a function f defined on the interval (-co, co). Find the coordinates of the absolute maximum and the absolute minimum of f, if they exist. (If an answer does not exist, enter DNE.) maximum ( x, y ) = minimum ( x, y ) = Find the absolute maximum value and the absolute minimum value, if any, of the function. (If an answer does not exist, enter DNE.) f ( x ) = - 9+ x 2 maximum 3 A minimum -3 Find the absolute maximum value and the absolute minimum value, if any, of the function. (If an answer does not exist, enter DNE.) f(x) = -x2 + 4x + 1 on [4, 7] maximum minimum