Hello!
Answer:
The answer is C.


Explanation:
→ We want to calculate the area and the perimeter of this rectangle:
I I
I I 2x + 7
I I
I I
I I
9x
→ We know that:
- the perimeter is equal to

- the area is equal to

Where:
- P is the perimeter
- A is the area
- l is the lenght
- w is the width
→ Let's apply these formula:


Conclusion:
The perimeter is equal to 14 + 22x.
The area is equal to 18x² + 63x.
→ So the correct answer is C.