3. you are buying potato chips at the grocery store. you have a manufacturer’s coupon for $0.50 off and the store is offering 50% off if you buy 2 bags. how do you compute your final cost? (1 point). subtract $0.50 off of each bag and then divide by 2.. divide each bag by 2, subtract $0.50 off of each bag, and then add them together.. add the two bags together, divide by 2, and then subtract $0.50.. subtract $0.50 from the first bag, add them together, and then divide by 2.