Solve for the unknown interest rate in each of the following: (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)
Present Value Years Interest Rate Future Value
$ 200 3 % $ 232
$ 320 17 % $ 847
$ 35,000 18 % $ 143,410
$ 34,261 20 % $ 261,665