Identify the set of numbers that makes up the domain in the relation {(-2, -2), (0, 2), (2, 4), (3, -6)}.

-6, -2, 2, 4
-6, -2, 0, 2, 3, 4
-2, 0, 3, 4
-2, 0, 2, 3

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.