The function f(x)=X+6x-3a. Find an equation for f(x), the inverse function.b. Verify that your equation is correct by showing that f(f(x)) = x and f(f(x))

The function f(x)=X+6x-3a. Find an equation for f(x), the inverse function.b. Verify that your equation is correct by showing that f(f(x)) = x and f¯¹(f(x)) = x.A. f¯¹(x) =a. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.(Simplify your answer. Use integers or fractions for any numbers in the expression.)OB. f'(x) =O c. f(x) =OD. f¹(x) =is one-to-one. For the function,3x +6x-1for x 1for x sfor x 2for all xVerify that the equation is correctf(t-¹(x))= 10andandf(f(x)) = f()Substitute.Simplify