An solid circle is on 20, so the point is include in the graph. The arrow points to the right , so the graph includes all numbers greater than 20.
Let x represents all numbers greater than 20.
The inequality is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=11df3ba034769f9d4266c4eb99bf3e9e.png\")
20, so the point is include in the graph. The arrow points to the right , so the graph includes all numbers greater than ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=11df3ba034769f9d4266c4eb99bf3e9e.png\")
20.20.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9216474735011f670f944595c0add6bf.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9216474735011f670f944595c0add6bf.png\")
.