Holly wants to have $$150,000$ to send a recently born child to college. She sets up a $529$ plan and wants to know how much she must invest at the end of each year for the next $18$ years if the funds can earn $6$ percent. Use Appendix C to answer the question. Round your answer to the nearest dollar.

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If she can earn $9$ percent, how much less will she have to invest each year? Use Appendix C to answer the question. Round your answer to the nearest dollar.