Principles Of Finance:
Solve for the unknown number of years in each of the following (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.): 
Present Value  Years  Interest Rate  Future Value  
$  540  [removed]  9  %  $  1,317  
790  [removed]  10  1,743  
18,200  [removed]  17  277,707  
21,300  [removed]  15  414,506  
