Answer:
D) (10,-8)
Step-by-step explanation:
The vertex form of the equation of a parabola is ...
f(x) = a(x -h)^2 +k . . . . . . for vertex (h, k) and scale factor "a"
Matching this pattern to the given equation, we see that ...
a = -5, h = 10, k = -8
so the vertex is (h, k) = (10, -8) . . . . . matches choice D
