From the set 12345 which values make the inequality n + 1 true pls help

Me figure out the process to determine x you appreciate it : )

∆red ≅ ∆ by rule will give brainiest if possible

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.