Holly wants to have $160,000 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 4 percent. Use Appendix C to answer the question. Round your answer to the nearest dollar. $ If she can earn 7 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. $