Download Classify each equation or inequality as true or false

Review of Chapters 1, 2, and 3
Classify as true or false.
1. 2.3 = 2.31
Simplify:
2. -3 > -3
3. -10 - 2.68
Simplify.
4. 12  4 + 15  3
5. 7  23
6. 2 - (33 + 16  (-2)3)
7. 3 - 2 - 7 + 4 
8. Evaluate: -3 - x2 + 12x, for x=5
9. The area of a parallelogram with base b and height h is bh. Find the area of
the parallelogram when the height is 3.5cm and the base is 8cm.
10. Use a commutative law to write an equivalent expression.
11. Use an associative law to write an equivalent expression.
x+3
(3p)q
12. 4(2x + 7)
13. Combine like terms.
4m + 10 - 5m + 12
Remove parentheses and simplify.
14. 2x + 5y - 7(x - y)
15. Determine whether 4 is a solution of the given equation: 3x - 2 = 10
SOLVE:
2
1
16. -  p 
3
6
19. 2x = 5 + 7x
17. 4x + 3 = -1
18. 12 = 5y – 18
20. x + 0.45 = 2.6x
21. 2(5 – m) = 5(6 + m)
22. 2 + 3(4 + c) = 1 – 5(6 – c)
25. ax + by = c, for a
23. A = lw, for w
26. 4b + 7  2 + 5b
24. q =
pr
, for r
2
27. (x + 5)  8 – 3x
28. Five times some number is 10 less than the number. What is the number?
29. The sum of two consecutive even integers is 34. Find the numbers.
30. The perimeter of a rectangle is 28 cm. The width is 5 cm less than the length. Find the width and
the length.
31. The second angle of a triangle is one third as large as the first. The third angle is 5 more than
the first. Find the measure of each angle.
32. A can of tomatoes is on sale at 20% off for $.64. What is the normal selling price of the
tomatoes?
1
33. Graph: y = - x + 3
2
34. Find the slope of x = -5
35. Hooke's Law for an elastic spring states that the distance a spring stretches varies directly as the
force applied. Suppose a force of 9 lb stretches a certain spring 15 in. How much will a force of 30 lb
stretch this spring?
36. It takes 4 hours for 12 people to build a woodshed. How long will it take 3 people to complete the
same job?
A.
4 12

3 T
Answer Sheet:
B.
4 3

12 T
C.
4 12

T 3
13. -m+22
1. False
14. -5x + 12y
2. True
15. yes
3. -12.68
16. 5/6
4. 8
17. -1
5. 56
18. 6
6. -23
19. -1
7. 2
20. 9/32 or .281
8. 32
21. -20/7
9. 28cm2
22. 43/2
10. 3+x
11. 3(pq)
12. 8x+28
34. Undefined
23. w=
D.
4 3

T 12
25. a=
c  by
x
26. {b b<5}
27. {xx<3/4}
28. 5x = x - 10
;-5/2
29. x + x + 2 = 34
16,18
A
l
24. r = -2q + p
35. 50 in.
30. 2x + 2(x - 5) = 28
4.5 cm, 9.5 cm
31. x 
1
x  x  5  180
3
750, 25º , 300
32. .8x = .64 ; $.80
36. D