Annie's attic is giving away $5 off coupons.
original price
sale price
$15
$10
$25
$20
$35
$30

subtract 5 off each sale price.

Step-by-step explanation:

if Anne gives away 5 dollar off coupons, for every coupon you have you subtract 5 off from the sale price. as long as the Sale Price allows more than one coupons to be stacked.

One Coupon:

15 would be 10

20 would be 15

Two Coupons:

15 Would be 5

20 Would be 10

what level of math? also i don't need to be paid if i can you.