## College Algebra (10th Edition)

The given interval involves an open bracket. This means that the lower limit (which is 4) is included in the set. The given interval is unbounded on the right. Therefore, the given interval is equivalent to: $x \ge 4$ To graph this on a number line, plot a solid dot at 4, then shade the region to its right. (Refer to the attached image in the answer part above.)