Answer: C... y ≥ -1
Explanation:
f(x) is a quadratic equation with the x-side squared and a is positive which means that the graph of the function is a parabola facing up. The range of f(x) is given by y ≥ k, where k is the y-coordinate of the vertex.
in vertex form (h, k) = (-1, -11)
This meaning the range =y ≥ -11