The function f(X)=X+21/X-7 is one to one. For the function :A. Find an equation for f^-1(x), the inverse.B. Verify that your equation is correct by showing that f(f^-1(x)=X and f^-1(f(x))=x Please show break down of solving the problem from beginning to end.

x+21 x - 7 is one-to-one. For the function, The function f(x) = a. Find an equation for f' 1 (x), the inverse function. 1 b. Verify that your equation is correct by showing that f\". 100) = x and f- (f(x)) = x. a. Select the correct choice below and, if necessary. ll in the answer box to complete your choice. (Simplify your answer. Use integers or fractions for any numbers in the expression.) 0 n. r"(x)=i\" j.fora|lx k 0 B. f.1(x)=D.forx2D 0 C. f-1(x)=D,forxsE| C) n. r"(x)=,rorx[:]