Chapters
1 -3
Cumulative Practice
Evaluate the expression for the given value of the variable.
(Lessons 1.1, 1.2, 1.3)
1. 20 4y when y 3
x
2. 12 when x 8
4
3. x2 8 when x 7
4. (6 x) 3x when x 6
5. (3t)3 when t 2
6. 8x2 when x 4
Evaluate the expression. (Lessons 1.3, 2.3, 2.4)
7. 9 3 2
4p9
9. 5
3
8. 5 3 p 8 6
10. 20 (3) 8
11. 2 p 35 (13)
12. [(6 p 4) 5] 7
Check to see if the given value of the variable is or is not a solution of
the equation or inequality. (Lesson 1.4)
13. 4 2x 12; x 2
14. 6x 5 13; x 3
15. 3y 7 31; y 8
16. x 4 < 6; x 9
17. 5m 3 > 8; m 1
18. 9 ≤ 22 4x; x 3
In Exercises 19–22, write the phrase or sentence as a variable expression,
equation, or inequality. (Lesson 1.5)
19. A number x cubed minus eight
20. Four less than twice a number x is equal to ten.
21. The product of negative three and a number x is less than twelve.
22. A number x plus fifteen is greater than or equal to thirty.
23. Draw a line graph to represent the data given by the input-output table.
(Lesson 1.8)
Input x
2
4
6
8
10
12
Output y
1
5
9
13
17
21
Complete the statement using < or >. (Lesson 2.1)
24. 0 ? 6
28. 2.1 ? 1.2
? 101
29. 109 25. 9 ? 8
30. 2 ? 3
? 9
31. 6 26. 1.5 ? 1
4
5
27. ? 5
4
Simplify the expression. (Lessons 2.5, 2.6, 2.7)
196
32. 4(x)(6)
33. 5(y)3
34. 8(3)(x)(x)
35. (4 2t)
36. 2(x 3) 1
2
37. (6x 9)
3
38. 3 6(x 4)
39. 5(9x 5) 2x
Chapter 3
Solving Linear Equations