13. How long will it take $800 to double if it earns the following rates? Compounding occurs once a year. Round your answers to two decimal places.

1. 6%.

   year(s)

2. 9%.

   year(s)

3. 19%.

   year(s)

4. 100%.

   year(s)

14. Find the future values of these ordinary annuities. Compounding occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent.

1. $600 per year for 10 years at 14%.

   $

2. $300 per year for 5 years at 7%.

   $

3. $800 per year for 5 years at 0%.

   $

4. Rework parts a, b, and c assuming they are annuities due.

   Future value of $600 per year for 10 years at 14%: $

   Future value of $300 per year for 5 years at 7%: $

   Future value of $800 per year for 5 years at 0%: $