Answer:I believe it's $8 but check just in case
Step-by-step explanation:It says 18.12% interest is for a year so you have to divide it by 12 to get a month =
.0151
Then you multiply that times the amount he needs to pay off:
$529.84 times 0.151 =
$8
If I'm incorrect than I'm really sorry but I think that's it.