CPM Homework Help : GB8I Problem 1-19

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Home > GB8I > Chapter 1 Unit 1 > Lesson INT1: 1.1.2 > Problem 1-19

1-19.

Evaluate the expressions below for the given values.

Hint (all):

Substitute the given value for $x$ . Evaluate the expression following the Order of Operations.

$- 2 x ^ { 2 } + 1 \text { for } x = - 3$

Answer (a):
$−2(−3)^2 + 1$
$−2(−3)(−3) + 1$
$−18 + 1$
$−17$

$2 ^ { x } \text { for } x = 3$

Hint (b):
$2^3 = 2 \cdot 2 \cdot 2$

$4 x - 4 \text { for } x = 3$

Hint (c):
Refer to part (a).

$2 \cdot 3 ^ { x } \text { for } x = 5$

Hint (d):
Refer to parts (a) and (b).

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