A university is planning to hold an event at a local venue, which will charge a fixed rental fee of $675 for the event plus $18.40 per guest for food. The university has budgeted $920 for administrative and marketing expenses. It plans to hire a band, which will cost another $510. Tickets are expected to sell for $41.80 per guest. Ignore taxes. What is the degree of operating leverage if 255 guests attend? 1.55 1.58 1.62 1.66 1.70