Question

A dog groomer charges her clients by the weight of the dog. The following piecewise function represents the total charge, f(x)
, for a dog weighing x pounds.
f(x)=⎧⎩⎨⎪⎪2.5x if 0≤x≤203.5x 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
?

Answer 1

The first piece ends at x = 20 (inclusive). Evaluate f(20) = 2.5·20 = 50.

So the last point graphed is the solid dot at (20, 50).