b. In 16 years at 11 percent? Note: Do not round intermediate calculations. Round your final answer to 2 decimal places. Answer is complete but not entirely correct. c. In 19 years at 12 percent? Note: Do not round intermediate calculations. Round your final answer to 2 decimal places. Answer is complete but not entirely correct. d. In 25 years at 12 percent (compounded semiannually)? Note: Do not round intermediate calculations. Round your final answer to 2 decimal places