Question

What is the perimeter of a rectangle with a length of 2x + 4 and a width of 4x?

Answer 1

Answer:

12x+8 or 4(3x+2)

Step-by-step explanation:

2x+4+4x+2x+4+4x

12x+8

4(3x+2)

Answer 2

I'll leave the picture to you; draw a rectangle and write 2x+4 along the length and 4x along the width.   We don't really know the aspect ratio of the rectangle until we know x so any rectangle is fine.

The perimeter is the sum of all four side lengths,

p = (2x + 4) + 4x + (2x + 4) + 4x

Answer: p = 12x + 8