## tacamry Group Title If f(x) = 1/2 x + 2 and g(x) = −3x − 1, find g[f(4)]. −19 11 −13 −11 2 years ago 2 years ago

1. KingGeorge

If you're given something like g[f(x)], that means that you want to find f(x), and take that value, and plug into to g. For example: g[f(0)]: Since $$\displaystyle f(0)=\frac{1}{2}(0)+2=2$$ $$g[f(0)]=g(2)=-3(2)-1=-7$$. Now can you do this with 4 instead of 0?

2. tacamry

so iht would be -11

3. KingGeorge

You're very close. You have f(4)=4 correct?

4. tacamry

i got it -13

5. KingGeorge

Bingo.

6. tacamry

thanx

7. KingGeorge

you're welcome.

8. tacamry

can yhu help with one other question to?