Answer:
Explanation:
AI-generated answer
To find the perimeter of the rectangle, we need to add up the lengths of all four sides. The formula for the perimeter of a rectangle is 2 times the sum of the length and the width.
In this case, the length of the rectangle is given as 5x - 2, and the width is given as 3x + 1.
To find the perimeter, we can use the formula 2(length + width).
Plugging in the given values, the expression to find the perimeter is:
2((5x - 2) + (3x + 1))
Now, let's calculate the perimeter when x = 4.
Replacing x with 4 in the expression:
2((5(4) - 2) + (3(4) + 1))
2((20 - 2) + (12 + 1))
2(18 + 13)
2(31)
62 centimeters
Therefore, the correct expression to find the perimeter of the rectangle is 2(5x - 2) + 2(3x + 1), and the perimeter when x = 4 is 62 centimeters.