[] signs mean that the number is included in the domain and () mean that the number is not included. Now,
1. [-1,5) Because x is greater than or equal to -1 (included) but less than 5 (excluded
2. [-5,13) When we plug in x = -1, we get the minimum value of -5, which is included because its x-value was included. The, we plug in x = 5 to find the range's maximum and this is excluded because its x-value was excluded.
3. 218 x = 6 lies in the domain of the first function so we will use it to evaluate the value of x = 6. We do this by simply substituting x into the function.
4. 12 x = 9 is included in the domain of the second function and the value of the second function at all points is 12.
5. 103 x = 10 is included in the domain of the second function so we will use it to evaluate the value of x = 10. This is done by substituting x into the equation.
The answer is C. AB. The total line segment is ACB, or AB, because C is in between A and B. If you are adding AC and CB together, you are adding the two parts of the line together.
