It seems there is some missing information in your question regarding the expressions, the value to be substituted, and the results of each classmate's calculations. To determine which expression produced the largest value, please provide the following details:
- The expressions for Levi, Terri, and Megan.
- The value they are substituting into those expressions.
- The results of their calculations.
Once I have that information, I can help you determine which expression produced the largest value!