At the beginning of the month Kiran had $24 in his school cafeteria account. Use a variable to represent the unknown quantity in each transaction below and write an equation to represent it. Then, represent each transaction on a number line. What is the unknown quantity in each case? 1. In the first week he spent $16 on lunches. How much was in his account then? 2. Then he deposited some more money and his account balance was $28. How much did he deposit? 3. Then he spent $34 on lunches the next week. How much was in his account then? 4. Then he deposited enough money to pay off his debt to the cafeteria, How much did he deposit? 5. Explain why it makes sense to use a negative number to represent Kiran's account balance when he owes money.​