Answer:
d
Step-by-step explanation:
The graph of this equation is shown in the figure below. We know that this equation is given as follows:

So, it is obvious that this is not a representation of a rain gauge. This graph represents a parable, but the rain gauge seems to be more like a <span>truncated cone</span>
F^-1 (x)= -x/5 + 4/5 (Answer)