Consider the scenarios below. Which of the four cash flow rules, if any, apply?

1. Sold $1,000 Air Jordans
2. Lent a friend $100
3. Borrowed $20 from a friend
4. Deposited a $1,400 paycheck
5. Purchased $100 groceries with cash
6. Purchased $300 scooter with a credit card
7. Told the friend you had lent $100 Dont worry about it
8. Worked 8 hours at $30/hour. Payday is next week.