Answer:
(-∞, -2) ∪ (-2, 6) ∪ (6, ∞)
Explanation:
The domain describes the x-values that can be used in a function.
The leftmost function contains all x-values until x = -2. This looks like (-∞,-2). Remember, open dots mean that the associated x-value is not included in the domain.
The middle function contains all x-values from x = -2 to x = 6. This looks like (-2, 6).
The rightmost function contains all x-values after x = 6. This looks like (6, ∞).
