It rained 40% of the days during casey's
vacation. what fraction of the days did it rain?

The vertex lies on the axis of symmetry so the axis of symmetry is x = 3. Find any two intercepts that are equal distance from the axis of symmetry. Use those intercepts to write factors of the function by subtracting their values from x. For example, 2 and 4 are each 1 unit from x = 3 so f(x) = (x – 2)(x – 4) is a possible function. Trust me this is the answer