You need to make an open-top box from a rectangle of cardboard 9 by 15 inches by cutting a square from each corner and folding up the sides. You want the box to have the maximum possible volume. Complete the following parts showing all your work. If each square you cut out of the corner is x by x inches, write an expression or function for the volume of the box, V(x) in terms of x. A sketch may help. Show all your work. B. Sketch (or use technology to plot) the function to find the maximum Clearly label or state the (x, y) coordinates of the value of x that optimizes the function and the maximum volume (y). how many pennies would it take to fill the box? Show all your work. please help ;-;