What appears to be the domain of the part of the exponential function graphed on the grid

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Is this a polynomial function? i need to know asap

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?