Answer:
Far left one, A
Step-by-step explanation:
Vertex = (1,4)
Axis of symmetry is x = 1, (1,0) or just 1
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k and m must satisfy 8k = 1 mean k = ⅛
and 2km+⅝=0 mean m = -5/2
We can write the following proportion between the milligram and milliliters:

Solving for x, we have

Intuitively, the original 1000mg/250ml solution tells us that the number of milliliters is one fourth of the number of milligrams.
So, if we want 700mg, we have one fourth of this value for the milliliters:
