A contractor is calculating the interior perimeter of square windows on a building site. Each window will be framed with 2 inches of wood within a concrete frame. The length or width of each window can be shown by the expression x − 2. The contractor writes this expression to find the interior perimeter of a window: (x − 2) + (x − 2) + (x − 2) + (x − 2). What equivalent expression can you use to find the same measurement?

answer

see attachment

explanation

the given function is

this function has y-intercept at

-4 and a slope of 2.

note that, the graph has a positive slope.

the graph that represents this function is the straight line that moves upward from left to right.

the graph touches the y-axis at -4.

the correct choice is the graph shown in the attachment.

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: