You are the basketball team captain and T-shirts are to be ordered for your season. T-shirts with a number on the back cost $12. T-shirts with a name and number cost $16. You have $240 to spend on T-shirts for the team. The equation 12x + 16y = 240 models the total cost, where x is t-shirts with a number on the back and y is t-shirts with a name and number on the back.

There are 12 members of the team who want their names and numbers on the back of their T-shirts. How many members will order a T-shirt with just their number on the back?