I Question 18 (3 points) What value of x maximizes the volume of an open box with a square bottom. where the surface area of the box is equal to 20? A Question 16 (3 points) What function should be used to minimize the distance between. V = 3x2. and the point (0. 2)? A! Question 17 (3 points) What point on the function, y = 3x2 is the closest to (0, 1)