A university is planning to hold an event at a local venue, which will charge a fixed rental fee of $525 for the event plus $13.40 per guest for food. The university has budgeted $770 for administrative and marketing expenses. It plans to hire a band, which will cost another $360. Tickets are expected to sell for $36.80 per guest. Ignore taxes. What is the degree of operating leverage if 235 guests attend? 1.29 1.32 1.36 1.39 1.43