Two different printing companies will print T-shirts if the design is submitted by the customer. Master Printing Company charges a $40 set up fee plus $9 per shirt. Five Star Printing Company charges a $70 set up fee plus $6 per shirt. ?Write an equation for each company that shows the total cost, C, for any number of T-shirts, t. How many shirts must be printed for the cost to be the same at each company? Show all work. ?Enter your equations, work and answer in the box below.