Could use some help with these questions.

• What's the difference between Fixed and Variable costs? Use examples.
• What is the difference between cash accounting vs accrual accounting? Use an example for each.
• What is your "cash reserve fund" and its importance to any business, new or established?
• How is the "payback period" calculated? Describe some of the unknowns that can influence this projection tool.
• Why is it important to manage accounts receivable? How would you address receivables beyond 90 days?
• Pick any two types of legal business structures and explain the tax issues associated/differences between the two.

Cut and Pasted answers from the internet will not be accepted.