The bands Metallica and Ghost are having a friendly competition to see who can sell all their shirts first while on a world tour together. Each show is schedule to last for 180 minutes. Ghost is starting the tour with 2,700 shirts and has 1920 shirts remaining after 26 shows. Metallica forgot to take inventory before the tour started but has been selling 50 shirts per show and has 2,100 shirts remaining after 30 shows. a) Write a linear equation to represent the number of shirts remaining, y , based on the number of shows performed, x , for each band. Write your answers in slope-intercept form.