Solve for the unknown number of years in each of the following (Enter rounded answers as directed, but do not use rounded numbers in intermediate calculations. Round your answers to 2 decimal places (e.g., 32.16)):

Present Value Years Interest Rate Future Value

$ 450 8 % $ 1,305

2,141 6 3,900

33,205 11 389,120

32,900 18 204,260