$($Related to Checkpoint$5\mathrm{.}6)($Solving for i$)$ Kirk Van$$ Houten, who has been married for $$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 $$$ in years. Kirk currently has $$$ to invest. What annual rate of return must Kirk earn on his investment to accumulate enough money to pay for the$$ ring?