Please help me identify the equation of the axis of symmetry?

Question

hydrogen · Answer

The equation is: $$y = 0.05(x - 30)^2 + 6$$ 
I was asked to find the coordinates of the vertex, and I did: they are (30, 6). 
However, next, I was asked to identify the "equation of the axis of symmetry". 

I feel very stuck with this and have been trying to figure this one out but can't seem to. If anyone can help, I would appreciate it very much!!

hydrogen · Answer

Oh, is the answer simply: x = 30?

inkyvoyd · Answer

the vertex of this parabola is (30,6). Thus you are correct - the answer is simply x=30

hydrogen · Answer

Thank you very much for verifying my answer and taking the time to reply!!

inkyvoyd · Answer

No problem :)