6. You and a friend go to Efren's Tacos and Burritos for lunch. You order 2 tacos and 2 burritos for a total of $9.00. Your friend orders 1 taco and 3 burritos for a total of $10.50. Create a system of equations and solve for how much each burrito costs and how much each taco costs. Use b as your variable for burritos and t as your variable for tacos. (4 points) 7. Solve the system of equations for x and y. (2 points) 13x - 6y = 22 x =y +6