Problem involving mortgage and rate

[teamrocket]

Homework Statement

Homework Equations

The Attempt at a Solution

80,000(((.095x)/(1-(1+(.095/12)))^12x)-1) keep getting errors with graph and can't answer it.

 

[symbolipoint]

It seems that your goal generally is to make good use of basic algebra; in any case, you might like to check the link at http://www.oakroadsystems.com/loan.htm