"Your donut shop has perfected a method for the perfect glazed icing by slowly mixing whole milk to confectioner's sugar while exposed to low heat. Your mixing tank starts with 10 fluid ounces of milk and 10 ounces of sugar. You continue adding sugar at a rate of 8 ounces per minute and milk at 2 ounces per minute, as depicted by the two equations below"

Part 1: Create a rational equation to represent the concentration (C) in ounces of sugar per ounce of milk.

Part 2: Find the domain of the concentration equation.

Part 3: Will we ever encounter a time where the rational equation is undefined? Explain your reasoning.

Part 4: Calculate the concentration after five minutes.

Part 5: How long does it take to reach a concentration of 3 ounces of sugar per ounce of milk?