CPM Homework Help : GB8I Problem 11-21

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Home > GB8I > Chapter 11 Unit 12 > Lesson INT1: 11.1.2 > Problem 11-21

11-21.

Solve the following inequalities. Explain or justify your steps for part (a).

$4x−1\geq7$
Hint (a):
Solve as an equation to find the boundary point.
Check points in each region to determine which region is the solution.
Answer (a):
$x ≥ 2$

$3−2x<x+6$
Hint (b):
Use the same method as part (a).
Answer (b):
$x \gt -1$

$2(x−5)\leq8$
Hint (c):
Distribute before solving.

$\frac{1}{2}x>5$
Hint (d):
Multiply the whole inequality by $2$ to cancel out the fraction.

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