Graph the function. Identify the vertex, x-intercepts, and the equation for the axis of symmetry.f(x) = x2 + 4
A. 
vertex: (0, 4)
x-intercepts: none
axis of symmetry: x = 0
B. 
vertex: (0, 4)
x-intercepts: (-2, 0) and (2, 0)
axis of symmetry: x = 0
C. 
vertex: (4, 0)
x-intercept: (4, 0)
axis of symmetry: x = 4
D. 
vertex: (0,-4)
x-intercepts: (-2, 0) and (2, 0)
axis of symmetry: x = 0
Answer: A
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