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1. |
Solve 2(y - 9) < 6. |
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A. |
{y | y > -6} |
B. |
{y | y < 12} |
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C. |
{y | y < 6} |
D. |
{y | y > 12} |
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Hint |
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2. |
Solve  |
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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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3. |
Solve x + 4 > 1 or x - 7 < 6. |
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A. |
{x | x > -3} |
B. |
{x | x < -3 or x > 13} |
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C. |
all reals |
D. |
{x | x < 13} |
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Hint |
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4. |
Choose the graph that is not a function. |
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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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5. |
Given the function f(x) = x2 + 9, find f(-3). |
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A. |
18 |
B. |
6 |
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C. |
0 |
D. |
12 |
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Hint |
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6. |
State the slope of the line graphed below. |
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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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7. |
The table below shows the land-speed records to the nearest mile per hour. Draw a scatter plot for the data and use it to predict the approximate land-speed record for the year 2005. Assume the rate of increase of speed records remains the same. |
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A. |
700 mph |
B. |
600 mph |
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C. |
980 mph |
D. |
830 mph |
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Hint |
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8. |
Which equation describes graph A? |
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A. |
y = | 2.25x | |
B. |
y = 2.25| x | - 1 |
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C. |
y = 2.25x - 1 |
D. |
y = | x - 1 | |
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Hint |
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9. |
Choose the graph of 3y - 2x > 6. |
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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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10. |
Solve the system of equations by graphing. 

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A. |
(-6, 2) |
B. |
(2, -6) |
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C. |
(2, 6) |
D. |
(6, 2) |
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Hint |
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11. |
What is the solution of the system of inequalities? 

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A. |
region 2 |
B. |
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C. |
region 3 |
D. |
region 1 |
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Hint |
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12. |
Find the minimum value of f(x, y) = 4x - 2y for the polygonal region determined by the feasible region. |
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A. |
-14 |
B. |
14 |
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C. |
-28 |
D. |
27 |
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Hint |
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13. |
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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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14. |
Find A - B if and  |
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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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15. |
Write the matrix equation as a system of linear equations. |
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A. |
-2s + t = 12 5s + 8t = 7 |
B. |
-2s = 7 5t = 12 |
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C. |
-2s + 5t = 7 s + 8t = 12 |
D. |
-2s + t = 7 5s + 8t = 12 |
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Hint |
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16. |
What type of function is shown in the graph? |
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A. |
step function |
B. |
piecewise function |
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C. |
constant function |
D. |
absolute value function |
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Hint |
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17. |
What is always true of an n × n matrix? |
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A. |
It is a column matrix. |
B. |
It is a row matrix. |
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C. |
It is a square matrix. |
D. |
It has at least two rows and two columns. |
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Hint |
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18. |
Solve the system –2x – 4y = 7, 3x + 5y = 9. |
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A. |
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B. |
(71, –39) |
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C. |
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D. |
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Hint |
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19. |
Solve 2.4x + 1.7y = 8.2, 3.8x – 0.8y = 5.3. Round to the nearest hundredth. |
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A. |
(1.86, 2.20) |
B. |
(–1.86, 2.20) |
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C. |
(1.86, –2.20) |
D. |
(–1.86, –2.20) |
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Hint |
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20. |
What is the 4 × 4 identity matrix? |
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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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