Problem $1$: When the Bell System was broken up$,$ the old AT&T was split into a new AT&T and seven regional telephone companies. The specific reason for forcing the breakup was to increase the degree of competition in the telephone industry. AT&T had a monopoly on local service, long distance, and the manufacture of all equipment used by telephone companies, and the breakup was expected to open most of those markets to competition. In the court order that set the terms of the breakup, the capital structures of the surviving companies were specified and much attention was given to the increased competition telephone companies could expect in the future. Do you think the optimal capital structure after the breakup was the same as the pre$-$breakup optimal capital structure? Explain your position.

Problem $2.$ Break$-$Even Analysis and Operating Leverage

a$.$ Given the following graphs, calculate the total fixed costs, variable costs per unit, and sales price for Firm A$.$ Firm B$$s fixed costs are $$120,000,$ its variable costs per unit are $$4,$ and its sales price is $$8$ per unit.

b$.$ Which firm has the higher operating leverage at any given level of sales? Explain.

c$.$ At what sales level, in units, do both firms earn the same operating profit?