Final answer:
Ray has a positive balance of $20 remaining in his account after spending money on various expenses.
Step-by-step explanation:
After spending money on stationery, food, and gas, Ray has a positive balance. He does not owe the bank money; instead, he has a balance of $20 remaining in his account. We can determine this by calculating the total amount Ray spent and subtracting it from his initial balance:
- Initial Balance: $145
 - Stationery: -$15
 - Food: -$50
 - Gas: -$60
 - Remaining Balance: Calculated by adding the expenses (which are negative) to the initial balance: $145 - $15 - $50 - $60 = $20
 
Therefore, the correct answer is: "After spending money on stationery, food, and gas, Ray has a positive balance. He does not owe the bank money."