SOLUTION: Helen can earn 3% interest in her savings account. Her daughter roberta is 11 years old today. Suppose Helen deposits $4000 today, and one year from today she deposits another $5

Question 782151: Helen can earn 3% interest in her savings account. Her daughter roberta is 11 years old today. Suppose Helen deposits $4000 today, and one year from today she deposits another $500. Each year she increases her deposit b $500 until she makes her last deposit on Roberta's 18th birthday. What is the annual equivalent of her deposits, and how much is on deposit after the 18th birthday?
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