Question

the function ( p(x) = 4x ) can be used to find the perimeter of a square with side length ( x ).elena determines that ( p(3.25) = 13 ).what is the meaning of ( p(3.25) = 13 )?a the perimeter of a square with side length 13 units is 3.25 units.b the perimeter of a square with side length 3.25 units is 13 units.c the perimeter of a square with side length 13 units can be found by multiplying by 3.25 to get 42.25.d the perimeter of a certain square is multiplied by 3.25 is equal to 13. therefore, the perimeter is 4.

Explanation:

The function \( P(x) = 4x \) calculates the perimeter of a square with side length \( x \). So \( P(3.25) = 13 \) means when the side length \( x \) is 3.25 units, the perimeter \( P(x) \) is 13 units. Let's analyze each option:

• Option A: Reverses the side length and perimeter, which is incorrect.
• Option B: Correctly states that a square with side length 3.25 units has a perimeter of 13 units.
• Option C: Misinterprets the function; \( P(x)=4x \), not multiplying the perimeter by 3.25.
• Option D: Misinterprets the function and the relationship between side length and perimeter.

Answer:

B. The perimeter of a square with side length 3.25 units is 13 units.