CPM Homework Help : AC Problem 2-56

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Home > AC > Chapter 2 > Lesson 2.1.5 > Problem 2-56

2-56.

Evaluate each expression to find $y$ .

$y=2+4.3x\ \text{when}\ x=−6$
Hint (a):
Substitute $−6$ in for $x$ . $y=2+4.3(−6)$
More Help (a):
Multiply and simplify.
$y=2+(−25.8)$
Answer (a):
$y=−23.8$

$y=(x−3)^2\ \text{when}\ x=9$
Hint (b):
Follow the steps in part (a).
More Help (b):
Don't forget to use the correct order of operations.

$y = x − 2 \ \text{when}\ x = 3.5$
Hint (c):
Follow the steps in part (a).

$y = 5x − 4\ \text{when}\ x = − 2$
Hint (d):
Follow the steps in part (a).
Answer (d):
$−14$

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