(Federal Income Taxes and Piecewise Functions MC)

The graph of a piecewise function is shown.

The graph shows a piecewise function in 3 pieces. The first piece is curved and increasing from the left through negative 3 comma negative 7 and ends at a closed point negative 2 comma negative 2. The second piece is linear with an open point at negative 2 comma negative 1 and another endpoint at 2 comma 1. The third piece is curved with an endpoint at 2 comma 1, and it goes through the point 3 comma 6 and continues to increase to the right.

What is the range of the function?

(–∞,∞)
[–∞,∞]
(–∞,–2] U (–1,∞)
(–∞,–2) U [–1,∞)