The maximum cost would be 6 with the inequality 6 ≥ x representing how.
You can solve this question by first turning it into an equation. She needs to find how much she can spend for each party favor on each friend so you want to set this up as 7x=42 with c being how much is the maximum cost per friend. You then want to isolate x by dividing 7 on both sides which leaves you with x=6
Now that you know the maximum cost for each bag is 6 you need to create the inequality. Because the maximum is 6 it can also be anything lower than 6 aswell, so you can say that the inequality is 6 ≥ x.