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NAME _____________________________________________ DATE __________________ PERIOD _________
Pretest
Solve each equation. Check your solution.
1. x + 7 = 12
1.
5
2. x + 9 = 2
2.
-7
3. x - 4 = 5
3.
9
4. 36 = 9x
4.
4
5. -3a = 15
5.
-5
b
= -7
6. −−
6.
21
7. 12 = 0.3n
7.
40
-3
8.
9. 4x + 6 = 10
9.
10. 3x - 10 = 5x + 20
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4
−
8
2
x=−
8. −
3
15
5
1
-15
10.
Find the multiplicative inverse, or reciprocal,
of each number.
7
1
−
or 2 −
3
3
3
11. −
7
11.
1
12. 3 −
4
12.
13
13. Five more than a number is at most eleven.
13.
n + 5 ≤ 11; n ≤ 6
14. The product of a number and 2 is at least
twenty.
14.
4
−−
Write an inequality and solve each problem.
2n ≥ 20; n ≥ 10
Solve each inequality. Graph the solution on a
number line.
15. x - 3 ≤ 9
x ≤ 12;
15.
8
16. -5m > 20
16.
9 10 11 12 13 14 15 16
m < -4;
-8 -7 -6 -5 -4 -3 -2 -1
0
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Course 2 • Chapter 6 Equations and Inequalities
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