Answer:
B
Explanation:
A square bracket means that the endpoint is included.
(f + g)(x) = (x + 4)^2 + 3
The range is the y value and the 3 is included. There is only 1 answer that shows that and that is B. The minimum value is 3 and it is included in the range.
The upper value of the range is undefined. It is not included in the value for the range. That leaves you with a round bracket for the upper value of the range. A compound statement of all of this is 3 ≤ y < ∞
The representation of the compound statement is B