Answer:
C: 
Step-by-step explanation:
The y-axis is the asymptote, and G(x) approaches it as x is getting smaller and smaller.
Actually, even more accurate would be to write

The down arrow shows that x has to approach 0 from the positive side.
It's about 20 units
Hope this helped :)
G(1) = 2(1) + 4 = 6
g(1) = 6
R - 10 = 18 - r
2r = 28
r = 14