Question

The width of a rectangle measures (k+3) centimeters, and its length measures (k−9) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle? O -8 + 4k O 2k - 6 O 8k - 16 O -12 + 4k

Answer 1

Answer: - 12 + 4k

Explanation:

Perimeter = 2* (length + width) = 2* ((k-9)+(k+3)) = 2* (k+k-9+3) = 2* (2k-6)

Using the distributive property, 2* (2k-6) = 4k-12 or -12+4k