CPM Homework Help : AC Problem 7-109

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Home > AC > Chapter 7 > Lesson 7.3.3 > Problem 7-109

7-109.

Evaluate the expressions below for the given values.

$-2x^2-3x+1$ for $x=-3$

Hint (a):
Substitute $x$ for the value given, and then simplify by using the Order of Operations.
Answer (a):
$-8$ for $x=-3$

$8-(3x-2)^2$ for $x=-2$
Hint (b):
Use the same method as part (a).
Answer (b):
$−56$

$\frac{-3}{k+2}$ for $k=-3$
Hint (c):
Substitute the given value for $k$ , and simplify for the denominator before dividing.
Answer (c):
$3$

$\frac{15m}{n+1}-m^2+n$ for $m=1$ and $n=2$
Hint (d):
Use the same method as part (c). Remember to substitute the correct values for $m$ and $n$ !
Answer (d):
$6$

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