3. Suppose that a ladder of length 10 feet is sliding down a wall so that the top is moving down the wall at a rate of 1ft/ sec. When the base of the ladder is 3 feet from the wall, + how fast is the base of the ladder sliding away from the wall?+ 4. Graph the function f(x) =4x +6x* -24x+1. Find the two critical points for this function. Find where the function is increasing and where it is decreasing. Find anye inflection points and where the graph is concave up and concave down