(Annuity payments) To pay for your child's education, you wish to have accumulated $13,000 at the end of 9 years. To do this, you plan to deposit an equal amount into the bank at the end of each year. If the bank is willing to pay 11 percent compounded annually, how much must you deposit each year to obtain your goal? The amount of money you must deposit each year in order to obtain your goal is $|. (Round to the nearest cent.) (Solving for n with non-annual periods) Approximately how many years would it take for an investment to grow twofold if it were invested at 12 percent compounded semiannually? Assume that you invest $1 today. If you invest $1 at 12 percent compounded semiannually, about how many years would it take for your investment to grow twofold to $2? (Hint your calculator solution to years.) Remember to convert years (Round to one decimal place.)