Solve the Number Sequence: -2, 0, 3, 7, 9, 12, (...)

The missing number could be any number that fits the pattern of the given sequence.

One possible pattern is that each number is increasing by 2 more than the previous number. Using this pattern, the missing number would be 14.

Another possible pattern is that each number is increasing by 3 more than the previous number. Using this pattern, the missing number would be 15.

Without more information or context, it is impossible to determine the exact missing number.