For your career project, you plan to design and sell T-shirts. During the first 5 weeks of selling the shirts, the function f(s)=4/3s-20 models your profit made, where s is the
number of shirts sold. Your teacher mentions that by making a slight change to your
printing procedure, you could double the number of shirts you could sell. Find your new
profit equation and determine the new profit you could make by selling 300 shirts.