Rhett decides to build a square room for his movie and music collection. if the area of the room is 4x2 + 28x + 49 square feet, what is the length of one side of the room? . (2x + 7) feet. (7x - 2) feet. (7x + 2) feet. (2x - 7) feet

 The correct option is (A) (2x + 7) feet.

Step-by-step explanation:  Given that Rhett decides to build a square room for his movie and music collection and the area of the room is (4x2 + 28x + 49) square feet.

We are to find the length of one side of the room.

We know that the area of a square having side length of 'a' units is a² square units.

So, to find the side length of the square room, we need to convert the area in form of a perfect square.

The are of the square room is

Since the area of the square room is (2x + 7)², so the length of one side of the room will be (2x + 7) feet.

i believe that the answer is

b. y-1=-2(x-4)

hope this !