Given the monthly payment formula:
![M=(Pr(1+r)^n)/((1+r)-1)](https://img.qammunity.org/2023/formulas/mathematics/college/fjdsgojjetknfndb0dm1n07bbek9y35398.png)
And the interest rate is 6.9%
To find the value to put for r:
Here, r represents the interest rate.
The value to put for r will be:
![6.9\text{percent = }(6.9)/(100)\text{ = 0.069}](https://img.qammunity.org/2023/formulas/mathematics/college/pxja9vsey2v8qzb7ei9f0srzwvmyan7gmi.png)
Since we have 12(months) monthly payments in a year, divide 0.069 by 12 to get the monthly value for r:
![(0.069)/(12)=0.00575](https://img.qammunity.org/2023/formulas/mathematics/college/f2e1tvr1iywitgb1ue8sfmw2xvjgtyi7jt.png)
ANSWER:
![r\text{ = 0.00575}](https://img.qammunity.org/2023/formulas/mathematics/college/j9gumg2i2oya4zguqzn99byz39koxuul7y.png)