A club began with 4 members. Each month, each member brought one new member. Mable says the solution is f(x) = 4(2)^x, Hazel disagrees and says the solution is f(x) = 2(2)^x, Matthew thinks he is correct and says the solution is f(x) = 4(1.5)^x. Who is correct and why?

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?