Solution 11923: Calculating Interest Rate on the TI-83 Family and TI-84 Plus Family Graphing Calculators.
How is interest rate calculated on a TI-83 family or TI-84 Plus family graphing calculator?
The example below will demonstrate how to calculate interest rate on a TI-83
family or TI-84 Plus family graphing calculator.
For Example: What is the interest rate for a mortgage of $75,000 if making a $576.69 payment each month for 360 months?
1) First access the TVM solver by pressing [APPS] [FINANCE] [ENTER].
Please Note: If you are using a TI-83 press [2nd] [FINANCE] [ENTER].
2) Input the following values:
2) Move the cursor beside I% and press [ALPHA] [SOLVE].