Please do the bottom questions, I provided the rest.

Answer:
6x + 10 ≤ 100
Step-by-step explanation:
For 3.
6x + 10 ≤ 100
6x + 10 - 10 ≤ 100 - 10
6x ≤ 90
(6x)/6 ≤ 90/6
x ≤ 15
For 4.
On the number line, you draw a closed/filled dot on 15. Then you draw a line from 15 all the way to 0. You can't pass 0 because you can't buy a negative amount of food items.
For 5.
The solution, x ≤ 15, means that Aiden can by at least 15 food items and a best gas grill and not go over his budget of $100.
Hope this helps!