Question

x ∈ (-∞, ∞)
x ∈ (-∞, 5
y ∈ (-∞, 5
y ∈ (-∞, ∞)

Explanation:

Step1: Analyze domain and range concepts

Domain is set of all x - values and range is set of all y - values of a function.

Step2: Observe the graph

If the graph has no vertical asymptotes or breaks in x - direction, x can take all real values. But if it has a maximum or minimum in y - direction, range is restricted. From the appearance of the graph (assuming it's a parabola opening downwards), it seems to have a maximum value for y. So the range of y values is from negative infinity to some maximum value. Here it seems the maximum y - value is 5 (from the options).

Answer:

y ∈ (-∞, 5]