Answer:
f(8) = 26
Explanation:
f(x) = 3x+2
g(x) = x^2 -x
Find the value f(8)
Use x = 8 in the first equation:
f(x) = 3x+2
f(8) = 3*(8)+2 for x = 8
f(8) = 26
There doesn't appear to be any need for the g(x) expression. Unless there is something missing in the question, g(x) is in the problem is simply a diversion from what is being asked and needed.