2. Delta Air Lines, Inc. is a major airline in the United States. For budgeting purposes, Delta measures its output by the number of customers served. The Delta Air Lines has provided the following cost estimates, both fixed and variable, to be uses for budgeting purposes. Fixed Element per Month Variable Element per Customer Served Revenue $ 660 Employee salaries and wages $ 125,000 $ 160 Travel expenses $ 700 Other expenses $ 31,900 When the Delta Air Lines prepared its planning budget at prior to the beginning of the year, it assumed that 20,000 customers would have been served in January. However, 25,000 customers were actually served during January. 1. What was the budgeted Revenue for Delta Air Lines? 2. What was the flexible budget revenue for Delta Air Lines? 3. What was the budgeted Employee salaries and wages for Delta Air Lines? 4. What was the flexible budget Employee salaries and wages for Delta Air Lines