Listen up i'll give a brainlist (view image to answer for part a, b,c ) Part A: Which of the following expressions represents the width of the door?

A. (3x+6)−x−x

B. (4x−1)−(3x+6)

C. (4x−1)−x−x

D. (3x+6)+(4x−1)+(4x−1)+x+x

Part B: What is the door's width in simplest form? To earn full credit, show your work

Part C: What is an expression that represents the area of the rectangular room? How can the expression be rewritten as a polynomial in standard form? To earn full credit, show your work

part a. A

part b. x + 6

part c. (4x – 1)(3x + 6)

Step-by-step explanation:

width + x + x = 3x + 6

width = 3x + 6 – x – x /answer for part a/

width = x + 6 /answer for part b/

Area = (length)(width) = (4x – 1)(3x +6) /part c/

Part A: A

Part B: x+6

Part C: 12x^2 + 21x - 6

Step-by-step explanation:

Part A:

Width of the door

= (3x+6) -x -x

Part B:

Width of the door

= (3x+6)-x-x

Bringing like terms together,

= 3x-x-x+6

= 3x-2x+6

= (3x-2x)+6

= x+6

Part C:

Area of the rectangular room = Length*Width

= (4x-1)*(3x+6)

= 4x*3x - 1*3x + 6*4x - 6

= 12x^2 - 3x + 24x - 6

= 12x^2 + 21x - 6

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)