If F(x) =g(x) =2x,
x can be any value
The line y = 7 would just be a Horizontal line on 7
Basically, you go up 7 units then draw a straight horizontal line across
Hope this helps!
Answer: 
Step-by-step explanation:
Given
Cost of white-washing =Rs. 4989.60
Rate =20 per meter square
So, inside area of = 
The surface area of dome= 

The volume of air in the dome 

Calculate the number of people who sat on the visitors' side:
8644
-5100
--------
3544
Now divide 3544 people by 8 sections:
3544 people
----------------- = 443 per section.
8 sections
Symmetry is the same as the one side of the graph but it is fliped on the X-axis