The length of a side of square is given as `2x + 3`. Which expression represents the perimeter of the square?

Options

A. `2x + 16`
B. `6x + 9`
C. `8x + 3`
D. `8x + 12`

Answer

To find the perimeter of a square when the length of a side is given as \(2x + 3\), we can follow these steps:

### Step 1: Understand the formula for the perimeter of a square.
The perimeter \(P\) of a square is calculated using the formula:
\[ P = 4 \times \text{side} \]

### Step 2: Substitute the given expression for the side.
In this case, the side of the square is given as \(2x + 3\). We can substitute this into the perimeter formula:
\[ P = 4 \times (2x + 3) \]

### Step 3: Distribute the 4 to both terms inside the parentheses.
Now, we will distribute the 4:
\[ P = 4 \times 2x + 4 \times 3 \]

### Step 4: Perform the multiplication.
Calculating each term gives:
\[ P = 8x + 12 \]

### Final Answer:
Thus, the expression that represents the perimeter of the square is:
\[ \boxed{8x + 12} \]

---