please answer accurately with a full explanation and please don't do short answers thank u, and if u spam this question u will be reported. please answer with a proper answer, not a short one thank u so much

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?

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?