Question

After which value of x does function g exceed function f

Answer 1

x=2

Explanation:

because this is where the numbers are the same. Then after function g is bigger than function f.

Answer 2

we have that

for x=1
f(x)=1.5 and g(x)=-1
so
g(x) < f(x)

for x=2
f(x)=5 and g(x)=5
so
g(x)= f(x)

for x=3
f(x)=9.5 and g(x)=23
so
g(x) > f(x)

therefore

the answer is
After x=2 function g exceeds function f