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1. |
Which of the following is not a characteristic of a good sample? |
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A. |
at least 20 items |
B. |
large enough to provide accurate data |
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C. |
representative of the larger population |
D. |
selected at random |
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Hint |
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2. |
The graph below can best be described as a _____. |
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A. |
histogram |
B. |
box graph |
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C. |
stem-and-leaf plot |
D. |
line graph |
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Hint |
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3. |
Any number that can be expressed as a fraction where the numerator and denominator are integers and the denominator is not zero is called a(n) _____. |
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A. |
natural number |
B. |
rational number |
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C. |
integer |
D. |
whole number |
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Hint |
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4. |
Choose the solution of 3x + 7 = 10 if the replacement set is {-1, 0, 1, 2}. |
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A. |
-1 |
B. |
2 |
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C. |
1 |
D. |
0 |
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Hint |
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5. |
In 1960, Chile experienced the largest earthquake of the century. The magnitude was 9.5 on the Richter scale. In 1952, Ecuador had the fourth largest earthquake. The magnitude was 0.7 less than the earthquake in Chile. What was the magnitude of the earthquake in Ecuador? |
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A. |
10.2 |
B. |
7.8 |
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C. |
11.2 |
D. |
8.8 |
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Hint |
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6. |
 |
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A. |
 |
B. |
 |
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C. |
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D. |
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Hint |
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7. |
Simplify 6b(-3.5c). |
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A. |
2.5bc |
B. |
-9.5bc |
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C. |
21bc |
D. |
-21bc |
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Hint |
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8. |
An experiment consists of tossing a coin three times. How many of the outcomes include at least 2 heads? |
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A. |
4 |
B. |
2 |
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C. |
3 |
D. |
1 |
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Hint |
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9. |
How many of the outcomes when tossing a coin three times include at least one tail? |
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A. |
5 |
B. |
6 |
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C. |
7 |
D. |
8 |
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Hint |
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10. |
Find the quotient (-5) ÷  |
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A. |
 |
B. |
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C. |
4 |
D. |
 |
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Hint |
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11. |
If a toy car measures 1 inch for every one-half foot of an actual car, what is the scale in inches? |
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A. |
1:10 |
B. |
1:6 |
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C. |
1:1 |
D. |
1:12 |
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Hint |
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12. |
Simplify the expression  (6x - 4). |
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A. |
3x – 2 |
B. |
3x – 4 |
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C. |
-2x + 3 |
D. |
-2x + 6 |
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Hint |
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13. |
Takoda wants to figure out how much the summer concert will cost the families attending. He knows that each adult has to pay ten dollars to get into the concert and that all children get in free. He does not know how much parking will cost for each vehicle, but he knows that each family will be driving its own vehicle. If there are 4 families with two parents and two families with single parents, which expression represents the situation? |
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A. |
6x + 80 |
B. |
6x + 30 |
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C. |
6x + 40 |
D. |
6x + 100 |
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Hint |
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14. |
Evaluate j – k – l if j = 2, k = 3, and l = 4. |
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A. |
1 |
B. |
9 |
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C. |
3 |
D. |
-5 |
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Hint |
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15. |
Evaluate jkl if j = 2, k = -3, and l = -4. |
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A. |
24 |
B. |
-9 |
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C. |
9 |
D. |
-24 |
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Hint |
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16. |
Choose the solution of  + x = 4 if the replacement set is {2, 4, 6, 8}. |
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A. |
2 |
B. |
6 |
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C. |
8 |
D. |
4 |
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Hint |
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17. |
Solve the equation j = 8(3) – 4. |
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A. |
-8 |
B. |
8 |
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C. |
20 |
D. |
-20 |
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Hint |
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18. |
8 is 40% of what number? |
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A. |
32 |
B. |
2 |
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C. |
20 |
D. |
3.2 |
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Hint |
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19. |
If you spin two spinners numbered one through ten, what is the probability of spinning a 2 the first one and an odd number the second? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
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Hint |
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20. |
Choose the tables that expresses
{(-3, 4), (-1, -5), (0, 2), (2, 3), (3, -4)}. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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