### Home > INT3 > Chapter 3 > Lesson 3.1.1 > Problem3-12

3-12.

If $f(x)=3x-9$ and $g(x)=-x^2$, determine: Homework Help ✎

1. $f(-2)$

$f(-2)=$
$3(−2)−9$

$f(-2)=−6−9$

$f(-2)=-15$

1. $g(-2)$

$g(-2)=-(-2)^2$
Remember to use the Order of Operations.

1. $x$ if $f(x)=0$

Solve
$0=3x-9$.

1. $g(m)$

You can still use the method of part (a) with a variable. Your answer will have a variable in it.