Plz help

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2

Select a graph that have an equation with a < 0

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?