CPM Homework Help : GB8I Problem 2-50

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Home > GB8I > Chapter 2 Unit 2 > Lesson INT1: 2.2.1 > Problem 2-50

2-50.

If $f(x)=3x−9$ and $g(x)=−x^2$ , calculate the values of:

$f(−2)$
Hint (a):
Substitute the value for $x$ .
$f(−2) = 3(−2) − 9$
Continue to simplify.

$g(−2)$
Hint (b):
Substitute the value for $x$ .
$g(−2) = -(−2)^2$
Continue to simplify.

$x$ if $f(x)=0$
Hint (c):
Substitute $0$ for $f(x)$ .
$0 = 3x −9$
Continue solving for $x$ .

$g(m)$
Answer (d):
Substitute the value for $x$ .
$g(m) = −m^2$

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