The functions f and g are defined as follows. =fx=−4x3 gx−−3x32
Find f−6 and g−2.

Simplify your answers as much as possible.

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?