A(n) ________ is an arrangement in which a third party promises to be secondarily liable for the payment of another's debt

Airlines make use of ____________ systems, based on telephone or Web site reservations. This provides enormous cost savings for airlines because it reduces ____________

a. Ticketless; gross revenue charges b. Partial; gross revenue charges c. Ticketless; travel agent commissions d. Partial; travel agent commissions e. Ticketless; net revenue charges

Use the information in Scenario B.4. What is the average number of customers waiting in line for service?

A) fewer than or equal to 4.0 B) greater than 4.0 but fewer than or equal to 4.5 C) greater than 4.5 but fewer than or equal to 5.0 D) greater than 5.0