Please help ASAP the question is in the picture and please explain why and how u got the answer

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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

(03.03 mc) choose the graph below that correctly represents the equation 2x + 4y = 24. (5 points) select one: a. line through the points 0 comma 6 and 12 comma 0 b. line through the points 0 comma negative 6 and 12 comma 0 c. line through the points 0 comma negative 12 and 6 comma 0 d. line through the points 0 comma 12 and 6 comma 0