17. Jill wants to have $200,000 to send a child to college. She has a 529 plan and wants to know how much she must invest for the next 18 years if the funds earn 5%. If the funds earn 7%, how much less will she have to invest each year. 18. Jack, a widower, has a $93,000 investment that yields 6 percent annually. Can she withdraw $14,000 for the next 10 years. Would your answer be different if the yieid were 9%