To create an equation that models the situation, we can define the variables as follows:
- Let \( C \) represent the total cost of the event.
- Let \( t \) represent the number of people attending (students and teachers).
The total cost consists of the bus rental and the cost of tickets per person. The equation can be modeled as:
\[ C = 500 + 20t \]
Where:
- \( 500 \) is the fixed cost of the bus rental.
- \( 20t \) is the cost for the tickets for \( t \) people.
Now let's find the total cost for the event if 60 students and teachers plan to attend (\( t = 60 \)):
\[ C = 500 + 20(60) \]
Calculating the ticket cost:
\[ 20 \times 60 = 1200 \]
Now substitute back into the equation:
\[ C = 500 + 1200 = 1700 \]
Therefore, the total cost for the event is \($1,700\).
The correct equation is \( C = 500 + 20t \), and the total cost for 60 attendees is \($1,700\).