Answer: Beth used 8 cups of milk.
Step-by-step explanation: Given that every morning for the past 12 days, Beth used 2/3 of a cup of milk on her cereal.
To determine the amount of milk she used in total, she set up the following equation
We are to find the total amount of milk that Beth used.
In order to determine the total amount of milk Beth used, we just need to evaluate the equation that she set up.
Therefore, the total amount of milk that Beth used is given by
Thus, Beth used 8 cups of milk.