Functions f and g are invertible functions. f(x)=4x−3 and g(x)=1/4x+3

Write a simplified expression

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?

Is the figure congruent? yes or no?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?