Expand or factor each of the following expressions to determine which expressions are equivalent. (3.1 + 5) (3.r - 4) (31 - 4y)? 92 - 2414 + 16y2 9r2 + 3.1 20 (41 – 3y)2 (36 + 2)- 60 + 4) 27-13 - 8 (3.r - 2) (9:2 + 60 + 4) ​

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?