The perimeter of the rectangle is unknown. the length is x + 4 ft, while the width is 2x ft. the area is unknown. what is the perimeter?

6x + 8 feet.

Step-by-step explanation:

The perimeter of a rectangle is equal to two times the height, plus two times the base. In this case, one side is given as x + 4 feet, and the other as 2x feet.

So, simply multiply each side by two, and add them together.

(2)(x + 4) + (2)(2x)

2x + 8 + 4x = 6x + 8 feet

i dont know sorry

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.