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1. |
The diagram below illustrates which equation? |
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A. |
|x - 2| = 4 |
B. |
|x + 4| = -2 |
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C. |
|x - 4| = 2 |
D. |
|x + 2| = -4 |
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Hint |
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2. |
Which proportion correctly states the percent proportion where P is the percentage, B is the base and r is the percent? |
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A. |
 =  |
B. |
 =  |
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C. |
=  |
D. |
=  |
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Hint |
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3. |
Solve the equation 10x - 5y = 15 if the domain is {-2, -1, 0, 1, 2}. |
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A. |
{(-2, 2), (-1, 1), (0, 0), (1, 2), (2, 1)} |
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B. |
{(2, -1), (-1, 1), (0, 3), (1, 5), (2, 7)} |
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C. |
{(-2, -7), (-1, -5), (0, -3), (1, -1), (2, 1)} |
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D. |
{(-2, -2), (-1, -1), (0, 0), (1, 1), (2, 2)} |
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Hint |
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4. |
An equation of the form xy = k, where k 0, is called a(n) _____. |
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A. |
inconsistant variation |
B. |
proportional variation |
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C. |
inverse variation |
D. |
direct variation |
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Hint |
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5. |
If the product of the slopes of two lines is –1, then the lines are _______. |
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A. |
horizontal |
B. |
vertical |
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C. |
perpendicular |
D. |
parallel |
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Hint |
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6. |
Simplify the expression  |
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A. |
36 |
B. |
34 |
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C. |
310 |
D. |
16 |
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Hint |
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7. |
Write 7 -2 using positive exponents. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
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Hint |
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8. |
Which statement below is not correct? |
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A. |
(2b - 5)2 = 4b2 - 20b + 25 |
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B. |
(3a + 1)2 = 9a2 + 6a + 1 |
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C. |
(x + 2)2 = x2 + 4x + 4 |
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D. |
(5y - 7)2 = 25y2 + 70y + 49 |
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Hint |
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9. |
The square root of 135 is between _____. |
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A. |
11 and 12 |
B. |
12 and 13 |
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C. |
13 and 14 |
D. |
10 and 11 |
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Hint |
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10. |
Sometimes, you know the product and are asked to find the factors. This process is called _____. |
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A. |
simplification |
B. |
distribution |
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C. |
prime analysis |
D. |
factoring |
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Hint |
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11. |
Find the difference 25 – 7. |
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A. |
18 |
B. |
-32 |
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C. |
-18 |
D. |
32 |
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Hint |
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12. |
Find the product -2(3)(-8). |
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A. |
-13 |
B. |
13 |
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C. |
48 |
D. |
-48 |
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Hint |
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13. |
Find the product 4(-1)(-2)(-4). |
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A. |
-11 |
B. |
-32 |
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C. |
11 |
D. |
32 |
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Hint |
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14. |
In New York City Crystal, Jolon, Ke-Min and Darnell are all software engineer managers. Their yearly salaries are, consecutively, $121,000, $115,000, $108,000, and $126,000. What is the mean, or average, of their yearly salaries? |
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A. |
$120,500 |
B. |
$110,000 |
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C. |
$117,500 |
D. |
$189,000 |
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Hint |
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15. |
Solve the equation 5 + 7(n – 3) = -2. |
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A. |
n = -3 |
B. |
n =  |
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C. |
n =  |
D. |
n = 2 |
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Hint |
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16. |
Convert 42 inches to feet. |
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A. |
7 ft |
B. |
504 ft |
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C. |
18 ft |
D. |
3.5 ft |
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Hint |
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17. |
Suppose y varies directly as x and y = -10 when x = 5. Find x when
y = 40. |
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A. |
20 |
B. |
-20 |
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C. |
10 |
D. |
-10 |
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Hint |
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18. |
What is the equation of the graph? |
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A. |
x = 3 |
B. |
y = -3 |
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C. |
x = -3 |
D. |
y = 3 |
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Hint |
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19. |
A fish called the Coelacanth who was thought to be extinct for 4 · 108 years was discovered alive in 1938. Write 4 · 108 years without exponents. |
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A. |
40 billion years |
B. |
400 million years |
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C. |
4 billion years |
D. |
40 million years |
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Hint |
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20. |
Find the height of the window to the nearest tenth of a foot. |
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A. |
7.5 ft |
B. |
19 ft |
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C. |
13.6 ft |
D. |
4.4 ft |
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Hint |
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