CPM Homework Help : CC2 Problem 6-112

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6-112.

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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