To solve the problem, we can define two variables:
- Let \( x \) be the number of tickets.
- Let \( y \) be the total cost.
According to the problem, the total cost can be represented by the equation:
\[ y = 50 + 15x \]
In this case, the group of students consists of 25 students, so we can set \( x = 25 \). Now we can substitute this into the equation:
\[ y = 50 + 15(25) \]
Calculating the ticket cost:
\[ 15(25) = 375 \]
Now, substitute back into the equation:
\[ y = 50 + 375 \] \[ y = 425 \]
Thus, the total cost for the school to take a class of 25 students to see The Nutcracker is $425.00.
The correct answer is B. $425.00.