Enid got a job through an employment agency that charges a fee equal to 40% of the first five weeks pay. the job pays $315 per week. how much does enid have to pay the employment agency?

$630
To answer this question you need to know how much Enid must pay each week. Enid got $315/week and the agency cut 40%, then it would be :
40% x $315 week= $126/week

Then you need to multiply it with how many weeks Enid need to pay. Enid need to pay for the first five weeks, then it would be:
$126/week x 5 week= $630