Marissa is an event organizer for a charity group. She is organizing a five-hour dinner event being held to raise funds for the charity. The following list shows the costs for hosting the event. Facility Rental: $150 per hour of event
Linens: $2 per attendee
Food: $20 per attendee
Table Decorations: $3 per attendee
Musical Entertainment: $1,800 (flat fee)
Cleaning Fee: $250 (flat fee)
The total cost of the event, with n attendees, is represented by the given expression.

Which statement best describes the constant in this expression?