US Airways is one of the nation's leading commercial air carriers, with hubs in Phoenix and Las Vegas. Listed below are some of the costs incurred by US Airways. Requirement 1. For each cost, select an appropriate cost driver and indicate whether the cost is likely to be fixed, variable, or mixed in relation to your cost driver. Begin by selecting a cost driver for each item, then select whether the cost is likely to be fixed, variable, or mixed in relation to your cost driver. (A cost driver may be used more than once. Select a cost type for each item, even if the cost driver is difficult to identify.) Cost driver a. Airplane fuel b. Flight attendants' salaries C. Baggage handlers' salaries d. In-flight meals e. Pilots' salaries f. Airplane depreciation g. Advertising then click Check