Its 4% do i get brainiest???
Answer: 
Step-by-step explanation:
1. You know that:
- The roped-off area whose width is represented with <em>x,</em> it is created around a rectangular museum.
- The dimensions of the rectangular museum are: 30 ft by 10 ft.
- The combined area of the display and the roped-off area is 800 ft².
2. The area of the rectangular museum can be calculated with:

Where
is the lenght and
is the width.
You have that the lenght and the width in feet are:

3. Let's call
the width of the roped-off area. Then, the combined area is:

Where



4. Substitute values and simplify. Then:


The variable cc refers to how much ink is in a certain number of
cartridges. If the box says 42cc, that means the amount of ink in those
particular cartridges is 42. If a box said 12cc, the amount would be 12.
The variable cc just states the amount of ink you can expect from a
particular amount of cartridges.
Is that a snake in the pic