Answer:

Step-by-step explanation:
Commission received on selling each storm window
of the selling price of each storm window
Commission received on selling each door
of the selling price of each door
Amount earned on selling storm windows = $5,400
Amount earned on selling doors = $28,790
Commission received on selling storm windows 
Commission received on selling doors 
Therefore,
Total commission received 
You didn't include any graphs but what you're looking for is a solid vertical line on x = 18 or the ordered pair (18, 0) where the whole left side of the line is shaded.
EDIT: I said whole left side of the graph; changed it to "line"
<span>D = 180 * (n -2)
D = 180n -360
180n = D +360
n = (D / 180) + 2
So, the answer is "A"
And we can test this with a square, sum of angles = 360
n = (D / 180) +2
n = (360 / 180) +2
number of sides = 4
correct
Source:
http://www.1728.org/polygon.htm
</span>
The choices are (3, 2) (2, 5) (6, 7) and (7, 5). The distance formula given two points is d = square root of [<span>(y2−y1)^2+(x2−x1)^2]. In this case, we try every point in the choices and substitute y1 equal to 6 and x1 equal to 6 as well. The answer is A from the choices.
</span>d=square root of [(6−2)^2+(6−3)2]
d=square root of [(4)^2+(3)^2]
d=square root of [16+9]
d=<span>square root of [</span>25]
d=5
To find percentage: divide the given value by the total and multiply by 100
546/1300 x 100 = 42%