box with a square base is to be made from a square piece of cardboard 15 inches on a side by cutting out a square from each corner and turning up the sides See the figure Answers parts a through e a Express the volume V of the box as a function of the length x of the side of the square cut from each corner 3 V 225x 60x 4x Simplify your answer b What is the volume if a 2 inch square is cut out The volume is 60 cubic inches Simplify your answer 0 8 of 1