find the equation of the axis of symmetry and the coorinates of the vertex of the graph of the function y=4x^2+5x-1
a.)x=-5/8;vertex:(-5/8,-5 11/16)
b.)x=5/8;vertex:(5/8,3 11/16)
c.)x=5/8;vertex:(5/8, 4 5/8)
d.)x=-5/8;vertex:(-5/8,-2 9/16)