To create an equation that models the situation where Mrs. Wilbanks is taking a group of students to see a play, we have the following information:
- The bus rental cost is a fixed cost of $500.
- The cost of each ticket is $20.
- Let \( t \) represent the number of tickets (which corresponds to the number of students and teachers attending).
The total cost \( C \) can be modeled by the equation: \[ C = 500 + 20t \] where \( 500 \) is the cost of the bus rental and \( 20t \) is the cost for the tickets for \( t \) attendees.
If 60 students and teachers plan to attend, then we substitute \( t = 60 \) into the equation:
\[ C = 500 + 20(60) \] Calculating this gives: \[ C = 500 + 1200 = 1700 \]
Therefore, the total cost for the event if 60 students and teachers plan to attend is $1,700.
The correct choice is: B. C = 500 + 20t; $1,700