Answer:
Glee club has 120 cupcakes to sell; they want to arrange it into a rectangle shape.
With an even rows and odd column In it.
=> 120 cupcakes all in all
=> 2 x 2 x 2 x 15
=> 8 x 15
=> 120
Thus, there will be 8 rows (which is even) in all and 15 columns (which is odd) of cupcakes in a rectangular shape in all.
Thus the glee club will arrange 8 by 15 rectangular shaped cupcakes.