To write expressions for the perimeter and area of the given rectangle, let's use the provided measurements.

Given:

• One side (height) of the rectangle is 4.
• The other side (width) of the rectangle is $x + 3$.

Expressions:

1. Perimeter of the Rectangle: The perimeter $P$ of a rectangle is given by the formula: $P = 2 \times (\text{length} + \text{width})$ Here, the length is $x + 3$ and the width is 4. Thus, [ P = 2 \times ((x + 3) + 4) = 2 \times (x + 3 + 4