If f(x)=2x−3f(x) = 2x - 3f(x)=2x−3 and g(x)=x+4g(x) = x + 4g(x)=x+4, what is f(g(x))f(g(x))f(g(x))?
2x+52x + 52x+5
2x+82x + 82x+8
2x+12x + 12x+1
x+1x + 1x+1