Can someone please help me with this

Use the graph to determine the range. which notations accurately represent the range? check all that apply. (–∞, 2) u (2, ∞) (–∞, –2) u (–2, ∞) {y|y ∈ r, y ≠ –2} {y|y ∈ r, y ≠ 2} y < 2 or y > 2 y < –2 or y > –2

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?