Can someone out with #3? i'll give brainliest answer.

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?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 2x + 3y is less than negative 3 over 2 times x minus 4part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points)part b: is the point (â’4, 6) included in the solution area for the system? justify your answer mathematically. (4 points)

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250