CPM Homework Help : INT3 Problem 3-12

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3-12.

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

$f(-2)$
Step 1(a):
$f(-2)=$
$3(−2)−9$
Step 2(a):
$f(-2)=−6−9$
Answer (a):
$f(-2)=-15$

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

$x$ if $f(x)=0$
Hint (c):
Solve
$0=3x-9$ .

$g(m)$
Hint (d):
You can still use the method of part (a) with a variable. Your answer will have a variable in it.

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