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

What would be the last point graphed on the first piece of the function, f(x)=2.5x
?

(1 point)

(19, 47.5)

(20, 50)

(20, 70)

(50, 20)

Answer 1

(20, 50)

Because the first piece applies for 0 ≤ x ≤ 20, its last point is at x = 20 and f(20) = 2.5·20 = 50 (a closed dot).