Respuesta :

JLTornado52

Answer: C.

Step-by-step explanation:

For a parabola ax² + bx + c with Vertex (xᵥ,yᵥ)...

  • If a < 0 the range is f(x) ≤ yᵥ
  • If a > 0 the range is f(x) ≥ yᵥ

a = -1, Vertex (xᵥ,yᵥ) = (0,3)

f(x) ≤ 3... so all real numbers less than or equal to 3

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