Mark packed 1 inch cubes into a box with a volume of 120 cubic inches. how many layers of 1-inch cubes did mark pack?

The number of layers of 1-inch cubes that Mark packed is determined by assuming that the larger box is also a cube. 
                         120 = e³
The value of e from the equation is approximately 5. Thus, there are approximately 5 layers of 1-inch cubes. 

Mickey incorrectly calculated the unit price:


The correct operation is:


Each carton costs 1.85, so 7 cartons cost