Which graph represents the solution set of the system of inequalities?

D (right-down graph)

Step-by-step explanation:

y = ax+b - linear function,

a>0 - ascending

a<0 - descending

- ascending function, because , so a>0

- descending function, cause , so a<0

We refuse both graphs on the left side, these are two ascending functions

is the area above the ascending function

is the area below the descending function

This causes that D (right-down graph) is a correct answer

a. she will receive a refund of $278.

step-by-step explanation:

answer: idk

step-by-step explanation: