need the answer to the problem asap

Question

let f(x)=x+4/x+10

f^−1(−1)

Answer 1

Rather than f(x) = x + (4/x) + 10, I think you meant f(x) = (x + 4) / (x + 10). To find the inverse f^-1(x), you can solve f(x) for x to obtain f^-1(x) = (10x - 4) / (1 - x) and evaluate at x=-1.