The graph of which function has a minimum located f(x) = - 1/2 x2 + 4x – 11
O f(x) = -2X2 + 16x - 35
O f(x) = 1/2x2 - 4x +5
O f(x) = 2x2 – 16x + 35

I  dont  know much about vertexes but i know to solve this function you need to use foil method and then corresponmd the vertex with the actual coordinates, hope i !