The following question is worth 2 points. Make sure to show all work and explain all answers to get full credit. A rectangular piece of cardboard is 16 by 24 inches. Squares of side length x inches are cut from each of the corners. An open box is found by folding up the remaining edges.

Part 1: Write an equation, in standard form, to represent the volume of the box. (1 point)

Part 2: What is the domain of x? Explain. (1 point)