The **amount** **Jerry** paid in interest is $1,040.

Given to us,

**Jerry's **principal **amount **= $ 22,000,

**quarterly **payment for each quarter = $ 640

Total **time **for which Jerry paid each quarter = 9 years

As We know that in a year there are** 4 quarters,**

so, ,

,

9 years = 36 quarters,

The** total** amount **paid **by **Jerry **for **nine **years in each **quarter **=

**quarterly **payment for each **quarter **x no. of **quarters **for which amount paid

Thus, the total **amount **paid by **Jerry **for **nine **years in **each **quarter is $23,040.

Therefore,

,

Hence, the **amount** **Jerry** paid in **interest **is $1,040.

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