To find the total cost for the school to take a class of 25 students to see The Nutcracker at the Boston Ballet, let's define our variables:
- Let \( x \) be the number of students.
- Let \( y \) be the total cost.
The cost is structured as follows:
- A flat rate of $50.00
- A cost of $15.00 per ticket, which is based on the number of students.
We can create the following equation based on this structure:
\[ y = 50 + 15x \]
For a class of 25 students, we set \( x = 25 \):
\[ y = 50 + 15(25) \] \[ y = 50 + 375 \] \[ y = 425 \]
So, the total cost for the class would be $425.00.
Therefore, the answer is:
$425.00