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#1




Calculating unknown interest rate
Are students supposed to use linear interpolation to calculate an unknown interest rate when the problem is not simple enough to use the financial calculator? I use the Excel Solver function in "real life". Linear interpolation can be time consuming.

#3




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#7




try this
maybe you could try to substitute all 5 choices into the your final function to see which number yields the answer. sometimes this is a better way compared to calculate i directly.
Last edited by nicole; 03142005 at 04:55 PM.. 
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