I'm confused math 7th grade pls help im confused

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

Agrid shows the positions of a subway stop and your house. the subway stop is located at (-5,2) and your house is located at (-9,9). what is the distance, to the nearest unit, between your house and the subway stop?

Yuto solved the equation below. what is the solution to yuto’s equation?