CPM Homework Help : CC2 Problem 4-119

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4-119.

Evaluate each expression below for the given value. That is, find the value of the expression when the variable is equal to the value given.

Hint:

For each problem, substitute the given value for each variable to evaluate each expression.

$2a-7$ when $a=3$
Step 1 (a):
$2a-7$ when $a=3$
Step 2 (a):
$2(3)-7$
Step 3 (a):
$6-7=-1$
Now solve for parts (b) - (d) using the same strategy. Remember the Order of Operations: multiply or divide before adding or subtracting.

$10+4m$ when $m=-2$

$9+(-2n)$ when $n=4$
Answer (c):
$9+(-2(4))=1$

$\frac{x}{2}+5$ when $x=6$

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