CPM Homework Help : GB8I Problem 1-61

CPM Homework Banner

Home > GB8I > Chapter 1 Unit 1 > Lesson INT1: 1.2.3 > Problem 1-61

1-61.

Calculate $f(4)$ for each function below.

$f ( x ) = x - 3$

Hint (a):
Substitute $4$ in for the variable $x$ .
So $f(4) = 4 - 3$ .

$f ( x ) = ( \frac { 1 } { 5 } ) ^ { x }$

Answer (b):
${f(4)=\left ( \frac{1}{5} \right )^{4}= \frac{1^{4}}{5^{4}}= \frac{1}{625}}$

$f ( x ) = 3 x - 12$

Hint (c):
Substitute $4$ in for the variable $x$ .

$f ( x ) = ( x - 2 ) ^ { 3 } - 6$

Hint (d):
Substitute $4$ in for the variable $x$ .
Step 1(d):
${{f\left ( 4 \right )=\left ( 4 - 2 \right )^{3} - 6}}$
Step 2(d):
${f\left ( 4 \right )=\left ( 2 \right )^{3}-6}$
Step 3(d):
${f\left ( 4 \right )=8-6}$
Answer (d):
${f\left ( 4 \right )=2}$

© 2022 CPM Educational Program. All rights reserved.