The range of a list of numbers is another measure of the dispersion of the list of numbers. It is defined simply as the difference between the largest number in the list and the smallest number in the list. For example, in the list {3, 6, −1, 4, 12, 8}, the largest number is 12 and the smallest number is −1. Therefore, the range is 12 − (−1) = 13.
The list {2, −1, x, 5, 3} has a range of 13. What are the possible values for x?