A dog groomer charges her clients by weight of the dog. The following piecewise function represents the total charge, f (x), for a dog weighing x pounds.
/
| 2.5x if 0 _< x _< 20
f (x) = < 3.5x if 20 _< x _< 50
| 5x if x > 50
\
What would be the last point graphed on the first piece of the function, f (x) = 2.5x?
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