if ur talking about like this then here
1. 354
2. 453 If this is what ur talking about i hope this helps :) :) :)
<span>The sections that it is in are
Classifying Quadrilaterals
Properties of Parallelograms
Special Parallelograms
Trapezoids and Kites
Placing Figures in the Coordinate Plane</span>
L*w=area
(3x+21)*w=3x^2+33x+84
w=(3x^2+33x+84)/3x+21
(3(x+4)(x+7))/3(x+7)
w=x+4
The answer is ‘B’ hope this help pls add me in brianlist!