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1. |
Use Cramer's rule to find the value of n in the system of equations. 
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A. |
-22 |
B. |
 |
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C. |
 |
D. |
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Hint |
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2. |
Determine which expression is not a polynomial. |
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A. |
x2 - y2 + z2 |
B. |
 |
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C. |
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D. |
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Hint |
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3. |
Find the area of the parallelogram. |
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A. |
(36a2 - 84ab - 49b2) cm2 |
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B. |
(36a2 - 49b2) cm2 |
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C. |
(36a2 + 49b2) cm2 |
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D. |
(12a2 + 14b2) cm2 |
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Hint |
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4. |
Solve  |
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A. |
 |
B. |
5 |
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C. |
 |
D. |
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Hint |
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5. |
Solve log4 x = 3 |
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A. |
64 |
B. |
16 |
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C. |
81 |
D. |
12 |
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Hint |
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6. |
Population The population of Redville grew from 5432 in 1990 to 7116 in 2000. Assuming the population is growing exponentially, predict the population of Redville in 2005. |
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A. |
about 8290 |
B. |
about 8360 |
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C. |
about 8140 |
D. |
about 7960 |
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Hint |
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7. |
Find the exact value of sin 405°. |
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A. |
 |
B. |
- 1 |
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C. |
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D. |
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Hint |
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8. |
Graph y =  . |
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A. |
 |
B. |
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C. |
 |
D. |
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Hint |
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9. |
What is the seventh term of (x - y)8? |
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A. |
-35xy7 |
B. |
-8xy7 |
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C. |
8xy7 |
D. |
-28xy7 |
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Hint |
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10. |
Evaluate z – (2yz + y) · y if y = -3 and z = 2. |
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A. |
-43 |
B. |
47 |
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C. |
23 |
D. |
9 |
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Hint |
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11. |
Evaluate | 5 (a – 2b) + 3 | if a = -3 and b = 7. |
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A. |
82 |
B. |
-85 |
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C. |
85 |
D. |
88 |
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Hint |
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12. |
What is true about a system of equations in three variables that has 1 solution? |
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A. |
planes intersect in one line |
B. |
planes intersect in the same plane |
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C. |
planes have no points in common |
D. |
planes intersect in one point |
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Hint |
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13. |
Find the area of a triangle whose vertices are located at (-3, 2), (0, -5), and (4, 4). |
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A. |
55 |
B. |
 |
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C. |
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D. |
1 |
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Hint |
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14. |
Solve 0 = x2 + 4x + 5 by graphing. |
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A. |
–1, 5 |
B. |
no real roots |
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C. |
1, –5 |
D. |
2 |
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Hint |
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15. |
A square root function,  , can be used to represent income made on an investment, with x being the amount originally spent, and f(x) being the profit. How much money would have to be spent in order to make $50? |
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A. |
$20 |
B. |
$7.91 |
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C. |
$2050 |
D. |
$2000 |
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Hint |
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16. |
Which of the following is not a geometric sequence? |
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A. |
1, 4, 16, 64 |
B. |
4, 2, 1, , … |
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C. |
6, 4 , 3, 1 , … |
D. |
3, 6, 12, 24, … |
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Hint |
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17. |
Which of the following is not a recursive formula? |
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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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18. |
In baseball, a cycle occurs when someone hits a single, double, triple, and home run in the same game. Assuming that a player bats only four times in a game, how many different ways can someone hit for the cycle? |
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A. |
6 |
B. |
24 |
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C. |
12 |
D. |
256 |
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Hint |
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19. |
In order to determine what American people like to do, a group of 100 random American men were asked what their hobbies were. Is this a random sample? If not, why is it not? |
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A. |
yes |
B. |
no, because no women are included |
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C. |
no, because it only includes Americans |
D. |
no, because it is based on opinion |
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Hint |
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20. |
Solve cos  = 3 cos – 1. |
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A. |
60°, 120° |
B. |
60°, 300° |
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C. |
30°, 150° |
D. |
30°, 330° |
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Hint |
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