Kirk Van Houten, who has been married for $22$ years, would lik to buy his wife an expensive diamond ring with a plantinum setting on their $30-$year anniversary. Assume that the cost of the ring will be $$12,495$ in $8$ years. Kirk currently has $$4,700$ to invest. What annual rate of return must Kirk earn on his investment to accumulate enough money to pay for the ring?rate of return must Kirk earn on his investment to accumulate enough money to pay for the ring?