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1. |
Determine which equation represents a function. |
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A. |
x = y2 - 1 |
B. |
x = 4 |
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C. |
y = -2x + 1 |
D. |
 |
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Hint |
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2. |
The temperature f(x) of water in a lake in degrees Fahrenheit is estimated by the function shown below, where x is the depth in feet of the water. What would be the temperature of water 30 feet below the surface? |
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A. |
63°F |
B. |
111°F |
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C. |
71.25°F |
D. |
33°F |
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Hint |
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3. |
Which interval has the most values? |
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A. |
70-80 |
B. |
90-100 |
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C. |
60-70 |
D. |
10-20 |
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Hint |
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4. |
What does 9|4 mean in the stem-and-leaf plot below? |
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A. |
904 |
B. |
94 |
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C. |
49 |
D. |
 |
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Hint |
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5. |
The following are scores on the English exam (the scores are out of 100). Which is the correct line plot? |
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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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6. |
Solve  |
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A. |
a = 29 |
B. |
a = -6 |
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C. |
a = 19 |
D. |
a = 5 |
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Hint |
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7. |
Find the mean of {3, 8, 10, 1, 25}. |
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A. |
9 |
B. |
9.4 |
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C. |
1 |
D. |
8 |
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Hint |
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8. |
Solve the equation x – 82 = 143 |
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A. |
225 |
B. |
 |
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C. |
61 |
D. |
-61 |
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Hint |
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9. |
Solve the equation  |
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A. |
 |
B. |
9 |
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C. |
-1 |
D. |
20 |
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Hint |
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10. |
Solve the equation 3y + 8 = 36. |
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A. |
4 |
B. |
20 |
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C. |
 |
D. |
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Hint |
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11. |
Consider the function f (x) = -2(x + 8). Is this function a linear function? Why or why not? |
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A. |
No, the function cannot be written in the form f (x) = mx + b. |
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B. |
Yes, the coefficient of x is not zero. |
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C. |
Yes, the function can be written in the form f (x) = mx + b. |
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D. |
No, f is not a function. |
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Hint |
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12. |
Baseball players are trying to show that they deserve more money. Their owner is paying 10 of them $1 million, 8 of them $2 million, and 3 of them $15 million. To support their case, which measure of central tendency should they use? |
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A. |
mean |
B. |
mode |
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C. |
standard deviation |
D. |
median |
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Hint |
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13. |
Find the next four terms of the sequence 122, 111, 100….? |
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A. |
90, 79, 68, 57 |
B. |
88, 77, 66, 55 |
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C. |
89, 77, 67, 55 |
D. |
89, 78, 67, 56 |
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Hint |
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14. |
What are the next 3 terms in the sequence 1, 4, 3, 6, 5….? |
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A. |
8, 10, 11 |
B. |
8, 7, 10 |
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C. |
7, 10, 9 |
D. |
7, 8, 9 |
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Hint |
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15. |
Given  find  |
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A. |
-6 |
B. |
6 |
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C. |
-3 |
D. |
3 |
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Hint |
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16. |
Solve  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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17. |
Graph the solution set of  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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18. |
What is the mean of the set {4, 7, 3, 8, 2, 6, 5, 8, 3, 2}? Round to the nearest tenth. |
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A. |
6 |
B. |
4.5 |
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C. |
4.8 |
D. |
3 and 2 |
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Hint |
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