X= 1 is the answer as you can see values of f(x) and g(x) are same
The volume of a right circular cone is pie *r square* h/3
In algebra it is fully possible for x to equal to zero. After you have 2x, just divide both sides by two, so it would be 2 divided by 0 and than you would have x=0 and that would be your final answer.
2x + 1 = 4x +1
-2x +1 = 1
-2x = 0
divide by -2
x=0
Just work with it as seperate triangles and then add them up.