Not really sure but I think is Copper!
Answer:
x = 0
Step-by-step explanation:
3x - 18 = 0 Add 18 to both sides
3x = 0 Divide both sides by 3
x = 0
21 is greater cause it whole number
Answer:

Explanation:
The figure is not a regular hexagon. It is an irregular hexagon.
Please, find attached the picture with the original question and the figure.
You can split the figure into two triangles and one rectangle.
The rectangle has dimensions: 7units × 4units, thus its area is 28 units².
Both the upper triangle and lower triangle have base 7 units and height 2 units.
Hence the area of each triangle is:

Hence, the area of the hexagon is:

I hope this helps!!!
1.C
2.A
3.B
4.D