Algebra-1

Question Analysis
This question tests the student's ability to simplify an expression involving the perimeter of a rectangle. The focus is on correctly applying the distributive property and combining like terms.

Key Concept Explanation
An expression is a combination of numbers, variables, and operations without an equals sign. Here, the expression for the perimeter is simplified.

Step-by-step Solution
1. Start with the expression: .
2. Distribute the 2: