Athree-dimensional figure with two parrallel, congruent bases that are polygons

That's a prism. What kind depends on what polygon the bases are; if they're triangles, it's a triangular prism, if they're pentagons, it's a pentagonal prism, etc.

1) If  2x > 50 , then x > 25.  Draw a circle at x=25 and then extend a ray in the positive x direction away from x = 25.

2) If x + 6 < 32, subtract 6 from both sides, obtaining x < 26.
     Draw a cirlce at x=26 and extend a ray from that x to the left.