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1. |
Choose the graph of  |
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B. |
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Hint |
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2. |
What is true about the system  and  |
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A. |
The system is inconsistent. |
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B. |
The system is consistent and independent. |
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C. |
The system is consistent and dependent. |
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D. |
The system has infinitely many solutions. |
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Hint |
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3. |
Solve the system of inequalities by graphing. 
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A. |
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B. |
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4. |
Selena has 31 days to complete her quilt for the county fair. The blue squares in the quilt can be sewn at a rate of 4 squares per day, and the white squares at a rate of 7 squares per day. The quilt can have up to 96 squares total. The blue fabric b costs about $0.80 per square and the white fabric w costs about $1.20 per square. Selena wants to keep costs at a minimum. Write an inequality that expresses the total number of squares to be sewn. |
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5. |
Write the fourth root of 625. |
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A. |
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B. |
6254 |
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C. |
5 |
D. |
4(625) |
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6. |
Find g[h(x)] if g(x) = x2 and h(x) = x + 3. |
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A. |
x3 + 3x2 |
B. |
x2 + 6x + 9 |
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C. |
x2 - x - 3 |
D. |
x2 + x + 3 |
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Hint |
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7. |
Solve  . |
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A. |
1 |
B. |
-3, -1 |
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C. |
0, 1 |
D. |
-3, 1 |
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Hint |
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8. |
What is sin  if is in standard position, its terminal side lies in quadrant IV, and sec  ? |
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B. |
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9. |
Simplify sin  . |
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A. |
tan x |
B. |
sin x + cos2x |
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C. |
2 sin x |
D. |
2 cos x |
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Hint |
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10. |
Write the equation of the line through (5, -3) and (-2, -8) in slope-intercept form. |
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B. |
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11. |
What is always true of an n × n matrix? |
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A. |
It is a row matrix. |
B. |
It has at least two rows and two columns. |
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C. |
It is a square matrix. |
D. |
It is a column matrix. |
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Hint |
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12. |
Simplify  |
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A. |
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13. |
Which of the following graphs best represents the function y = –x2 + 7x + 8? |
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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. |
Solve  by graphing. |
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A. |
{x| –1.19 < x < 0} |
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B. |
{x| 0 < x < 4.19} |
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C. |
{x| –1.19 < x < 4.19} |
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D. |
{x| 4.19< x < –1.19} |
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Hint |
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15. |
Which of the following points will be included in the graph of  |
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A. |
(8, 3) |
B. |
(4, 1) |
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C. |
(11, 5) |
D. |
(2, 1) |
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Hint |
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16. |
Which of the following points will not be included in the graph of ? |
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A. |
(1, 5) |
B. |
(5, 8) |
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C. |
(3, 2) |
D. |
(6, 6) |
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Hint |
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17. |
What is the equation of the hyperbola whose vertices are at (2, -9) and (2, 7), and whose foci are at (2, -11) and (2, 9)? |
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A. |
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B. |
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18. |
What is the major difference between circles and ellipses? |
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A. |
In circles, one of the squared terms has a coefficient that is = 0. |
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B. |
Ellipses may be elongated on one axis, while circles have a constant radius. |
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C. |
Equations for ellipses can always be written in the form  , while circles cannot. |
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D. |
Ellipses are functions of x, while circles are not. |
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Hint |
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19. |
In order to write  as a fraction, by what factor should we multiply S in order to obtain a second equation? |
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A. |
1000 |
B. |
10 |
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C. |
100 |
D. |
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Hint |
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20. |
Find the exact value of cos (480°). |
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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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