9514 1404 393
Answer:
D. (-∞, 4]
Step-by-step explanation:
The range is the vertical extent of the graph. The graph extends off the bottom, so the lower end of the range is -∞. The peak values are y=4, so the upper end of the range is 4.
Expressed in interval notation, the range is ...
(-∞, 4]
_____
Additional comment
The right-side bracket is square because the value 4 is included in the range. The left side bracket is rounded because there's no specific number equal to -∞. We can only say the lowest value of y is greater than -∞.
