CPM Homework Help : MC2 Problem 6-29

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Home > MC2 > Chapter 6 > Lesson 6.1.3 > Problem 6-29

6-29.

Evaluate the following expressions.

$7x + 8$ when $x = 9$
Hint (a):
When you replace $x$ with $9$ your equation is:
$7(9) + 8$
More Help (a):
Use the order of operations to simplify.
Answer (a):
$71$

$6(y-11)$ when $y =-6$
Hint (b):
Replace $y$ with $−6$ and then use the order of operations to simplify the expression.

$45-5m + 7$ when $m = –4$
Hint (c):
Use the method presented in part (a).
Answer (c):
$72$

$–2t + 9$ when $t =-20$
Hint (d):
See part (a).

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