Analytically show f(f^-1(x))=x and f^-1(f(x))=x. I think f^-1(x) is sqrtx+9 but if i am wrong please correct me if needed.

no pictures of the graph

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

im alright what do you need

step-by-step explanation: