Question

Um... Does anyone know?​

Answer 1

Answer: if your talking about 19 that would be 2

Step-by-step explanation:

you can tell but looking at the first point it is at (20,10) so that means for ever 2 retail price it goes 1 up in sale price

Answer 2

I believe that they're proportional since they're held at a constant value.

Explanation:

The 1/2 overall mean doesn't change.