Which rate is equivalent to 8 liters per minute

Which expression is equivalent to 2^4y^3

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30