Billot Telephone was formed in the 1940s to bring telephone services to remote areas of the US Midwest. The early equipment was quite primitive by todays standards. All call were handled manually by operators, and all customers were on party lines. By the 1970s, however, all customers were on private lines, ad mechanical switching devices handled routine local and long distance calls. Operators remained available for directory assistance, credit card calls and emergencies. In the 1990s Billot Telephone added local internet connections as an optional service to its regular customers. It also established an optional cellular service, identified as Home Ranger.

1. Using a unit level analysis, develop a graph with two lines representing Billots cost structure. Be sure to label the axes and lines
   • In the 1940s
   • In the late 1990s
2. With sales revenues as the independent variable, what is the likely impact of the changed cost structure on Billots:
   • Contribution Margin Percent
   • Break Even Point
3. Discuss how the change in the cost structure affected Billots operating leverage and how this affects profitability under rising or falling sales scenarios.
4. Provide 3 specific managerial decisions that can have an impact on the degree of operating leverage of a firm.