I am new to this service and not sure what I posted. I think I may have posted a whole list of questions

the only ones I meant to post are These 5

Samuel Johnson invested in gold U.S. coins ten years ago, paying $216.53 for one-ounce gold "double eagle" coins. He could sell these coins for $734 today. What was his annual rate of return for this investment?

Gary Kiraly wants to buy a new Italian sports car in three years. The vehicle is expected to cost $80,000 at that time. If Gary should be so lucky as to find an investment yielding 12% over that three-year period, how much would he have to invest now in order to accumulate $80,000 at the end of the three years?

Marcia Stubern is planning for her golden years. She will retire in 20 years, at which time she plans to begin withdrawing $60,000 annually. She is expected to live for 20 years following her retirement. Her financial advisor thinks she can earn 9% annually. How much does she need to invest each year to prepare for her financial needs after her retirement?

Sara Shouppe has invested $100,000 in an account at her local bank. The bank will pay her a constant amount each year for 6 years, starting one year from today, and the account's balance will be 0 at the end of the sixth year. If the bank has promised Ms. Shouppe a 10% return, how much will they have to pay him each year?

A person purchased 100 acres of land in 1990 for $100,000. If she sells the land for $5000 per acre in 2010 what rate of retrun will seh have earned on her investment ( ignor property and income taxes)