Mary and Jay pool their loose change to buy snacks at the coffee bar. One day, they spent $6.75 on 1 carton of milk, 2 donuts, and 1 cup of coffee. The next day, they spent $8.50 on 3 donuts and 2 cups of coffee. The third day, they bought 1 carton of milk, 1 donut, and 2 cups of coffee and spent $7.25. What is the cost of each item? Use Gaussian Elimination or Gauss-Jordan Elimination with matrices to solve the system of equations. The cost of one carton of milk is $ nothing (Use 2 decimal places) The cost of one donut is $ nothing (Use 2 decimal places) The cost of one coffee is $ nothing (Use 2 decimal places) Upload a complete explanation of your answers at the end of the test.