Could you please provide the equation and the rest of the question?
I think 53.088 is the answer
Let y = x^2 - 1
x^2 = y + 1
x = sqrt(y + 1)
so f^-1(x) = sqrt (x + 1) (answer)
The answer would be C.FFM because it is the only option with more than one female compound
Hope this helps
Have a great day/night