Answer:
-14
Explanation:
It's multiple choice so we could plug in values of x and see which makes f(x)=g(x) true.
What I mean is would could plug in values of x to see which gives us
3x-4=4x+10 is true.
Or we could just solve it.
3x-4=4x+10
Subtract 3x on both sides:
-4=1x+10
-4=x+10
Subtract 10 on both sides:
-14=x
So x=-14 would make f(x)=g(x) hold.
Let's check it and see!
f(-14)=3(-14)-4=-42-4=-46.
g(-14)=4(-14)+10=-56+10=-46.
They have the same value of -46 so x=-14 is certainly going to make f(x)=g(x) be true.