your school's parent-teacher organization wants to sell long-sleeved t-shirts as a fundraiser. The business manager found a company that will charge $4 for each long-sleeved t-shirt and a setup fee of $160 to create the design that will be placed on each shirt. The chairman of the fundraising committee suggested selling the long-sleeved t-shirts for $8 each. At what point will the parent-teacher organization start making a profit?