1. If my memory serves me well, if a consumer makes monthly payments of $250 to pay off a car loan, she is using non revolving credit. Non revolving credit is a type of credit which should be paid off with regular monthly payments. The loan is paid off over time which depends on a contract.
2. The main advantage here is purchase power. In her case, credit car is more comfortable way than cash. With credit card she can afford to buy anything she needs without any problems.
3. In my view birthday gifts is the best example of a variable expense category. Variable expenses are the costs that respond to some activity changes, like shipping costs, packaging and so on.
4. The benefit of using a financial tool to track your budget is that it gives you a visual of your income and expenses. It's very important to have a visual of your money as it allows you to learn how to manage your budget.