Victor has two store coupons. Coupon 1 gives him $20 off on one item. Coupon 2 gives him 20% off on one item. Victor can use both coupons together on one item in the store and choose which coupon to apply first. For an item that has an original price of xx dollars, let ff be the function that models the discount price of the item using only coupon 1 and let gg be the function that models the discount price of the item using only coupon 2. The price of each item in this store is more than $40. Write a mathematical statement that explains which coupon should be applied first when using both coupons to give Tara a lower price.