Your interest rate (6%) is the annual rate on the loan. To calculate amortization, you will convert the annual interest rate into a monthly rate. The term of the loan is 360 months (30 years). Since amortization is a monthly calculation in this example, the term is stated in months, not years. Your monthly payment is $599.95. The dollar amount of the payment stays constant.
Many teenagers can eat 1 to 3 servings per week without gaining too much weight. Remember too much sweets and desserts will also effect the amount of skin problems your teenager has, like pimples. One serving is a medium portion, such as 1/8 of a pie, 1/2 cup ice cream, a 3-inch pastry,1/2 cup pudding, or 2 small cookies.
Active teen guys have significantly larger daily calorie requirements. At age 12, active boys need about 2400 calories a day to stay healthy. That need increases by 200 calories each year the youth ages, and the daily calorie requirement peaks at 3200 calories between the ages of 16 and 18 years old.