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(Related to Checkpoint 5.6) (Solving for i ) Kirk Van Houten, who has been married for 21 years, would like to buy his wife an expensive diamond ring with a platinum setting on their 30 -year wedding anniversary. Assume that the cost of the ring will be $12,500 in 9 years. Kirk currently has $4,423 to invest. What annual rate of return must Kirk earn on his investment to accumulate enough money to pay for the ring? The annual rate of return Kirk must earn on his investment to accumulate enough money to pay for the ring is (Round to two decimal places.) (Related to Checkpoint 5.6) (Solving for i ) At what annual interest rate, compounded annually, would $500 have to be invested for it to grow to $1,948.00 in 12 years? The annual interest rate, compounded annually, at which $500 must be invested for it to grow to $1,948.00 in 12 years is \%. (Round to two decimal places.) (Related to Checkpoint 5.5) (Solving for n ) How many years will it take for $510 to grow to $996.17 if it's invested at 6 percent compounded annually? The number of years it will take for $510 to grow to $996.17 at 6 percent compounded annually is years. (Round to one decimal place.)