Kevin pay in finance charges the amount of approximately $787.
The weekly principal and interest amount are $36. 13 for 4 years. Here, the principal amount paid is $7,150.
Therefore, total interest plus the principal amount paid in 4 years are:
[tex]36.13*52*4\\=7515.04.[/tex]
Here, 52 is the total week in a year that is multiplied by 4 years and payment in one week.
The service charge that Kevin intended to pay was $422, which makes the total payment as:
[tex]7515.04 + 422\\=7937.04[/tex]
Hence, the actual finance charge would be computed as below:
[tex]7937.04 - 7150\\=787.04.[/tex]
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