Answer:
The correct answer is letter B.
Step-by-step explanation:
When we represent a pair like this (0,400) the first number is the "s" of the equation, while the second number is the "p" of the equation. In this case "s" means the total amount Juanita sold in that week and "p" means her income for the week. Since the amount sold is equal to 0, then the total earned is equal to her base salary. So the correct answer is letter B.