To model the situation with an equation, let:
- \( C \) represent the total cost.
- \( t \) represent the number of tickets (students and teachers) attending the play.
The fixed cost of the bus rental is $500, and the cost of each ticket is $20. Therefore, the equation modeling the total cost is:
\[ C = 500 + 20t \]
To find the total cost for 60 students and teachers, substitute \( t = 60 \) into the equation:
\[ C = 500 + 20(60) \] \[ C = 500 + 1200 \] \[ C = 1700 \]
Thus, the total cost for the event is $1,700. The correct response is:
C=500+20t; $1,700