You are repaying a debt of $10,000 with equal payments made at the beginning of four equal periods. If the interest rate is 10% per period, how much of the original $10,000 principal will be paid in the second payment? The parents of a young child decide to make annual deposits into a college savings account. The first deposit will be made on her 5th birthday and the last deposit will be made on her 15th birthday. Then starting on her 18th birthday, withdrawals for college expenses will he made as follows: $2,000 on her 18th birthday, $2, 400 on her 19th birthday, $2, 800 on her 20th birthday, and $3, 200 on her 21st birthday. If the effective annual interest rate is 10%, during this entire period of time, what is the amount of the equal, annual deposits made on birthdays 5 through 15