Please answer each of the following questions in detail. Provide in-text citations and include examples whenever applicable.

1. Explain the difference between public accounting and managerial accounting. Provide a hypothetical example of an income statement for public reporting. Provide a hypothetical example of a managerial accounting income statement in process costing format. Explain your examples in detail.
2. Explain operating cost classifications in managerial accounting, namely, manufacturing vs. selling/admin, variable vs. fixed, direct vs. indirect, and variable overhead vs. fixed overhead. Include examples for all.
3. Explain the predetermined variable overhead criterion and include an example.