A store charges $15 per t-shirt for orders of 20 or fewer t-shirts, $12.50 per t-shirt for orders of 35 or fewer but more than 20 t-shirts, and $ 11.5per t-shirt for orders of more than 35 t-shirts. At the beginning of the semester, they order 40 t-shirts of one design and then 15 t-shirts of another design at the end of the semester.

Part A: Write a piece wise function to represent what the store charges for t-shirts. Make sure to include the domain for each piece of the function.

Part B: Determine the total charge for a school that orders twice.