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1. |
Write  in standard form where A, B, and C are integers whose greatest common factor is 1. |
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A. |
3x - 8y = 2 |
B. |
3x + 8y = 16 |
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C. |
3x - 8y = 16 |
D. |
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Hint |
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2. |
State the slope and y-intercept of the graph of -y = -0.9x + 4. |
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A. |
m = -4, b = 0.9 |
B. |
m = -0.9, b = 4 |
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C. |
m = 0.9, b = -4 |
D. |
m = 4, b = -0.9 |
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Hint |
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3. |
The scatter plot below shows the women's winning marathon times and the high temperatures on the marathon days. Which prediction equation best shows how marathon times and temperature are related? |
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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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4. |
A best-fit line is drawn on a scatter plot showing the average daily temperature and the number of people at a public swimming pool. The slope of the line would probably be ________ |
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A. |
zero. |
B. |
negative. |
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C. |
positive. |
D. |
undefined. |
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Hint |
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5. |
If g(x) = |x + 3|, find g(-7). |
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A. |
-4 |
B. |
4 |
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C. |
10 |
D. |
-7 |
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Hint |
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6. |
Which coordinates are not of the vertices of the feasible region for the system of inequalities? 
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A. |
(0, 6) |
B. |
(5, 1) |
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C. |
(2, 4) |
D. |
(5, 4) |
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Hint |
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7. |
The product  gives the coordinates of two points on line AB that has been rotated 90° counterclockwise about the origin. Name the coordinates of A' and B'. |
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A. |
A'(-1, -3), B'(1, 1) |
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B. |
A'(1, -3), B'(1, 1) |
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C. |
A'(-1, 1), B'(1, -3) |
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D. |
A'(1, 1), B'(-1, -3) |
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Hint |
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8. |
Find the product of -15i and its conjugate. |
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A. |
15i |
B. |
225 |
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C. |
-225 |
D. |
225i |
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Hint |
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9. |
Solve x2 + 3x - 10 = 0 by completing the square. |
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A. |
-5, 2 |
B. |
2, 5 |
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C. |
2 |
D. |
5 |
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Hint |
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10. |
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 7960 |
B. |
about 8290 |
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C. |
about 8360 |
D. |
about 8140 |
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Hint |
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11. |
Find the sum of the geometric series –5, -10, -20, -40, . . . for 7 terms. |
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A. |
-689 |
B. |
-635 |
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C. |
-599 |
D. |
-527 |
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Hint |
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12. |
What is the slope of a constant function? |
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A. |
1 |
B. |
0 |
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C. |
c, where f (x) = c |
D. |
-1 |
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Hint |
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13. |
Which of the following properties does not hold for matrices? |
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A. |
commutative property of multiplication |
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B. |
associative property of multiplication |
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C. |
right distributive property |
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D. |
left distributive property |
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Hint |
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14. |
Solve the system of equations 7x – 14y =4, 3x – 6y =17. |
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A. |
(3, –2) |
B. |
no unique solution |
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C. |
infinite solutions |
D. |
(2, 1) |
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Hint |
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15. |
Simplify  |
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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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16. |
Simplify  |
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A. |
t |
B. |
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C. |
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D. |
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Hint |
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17. |
Given that  and  , find  |
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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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18. |
What is the domain and range of  ? |
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A. |
D: 
R:  |
B. |
D:
R:  |
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C. |
D: 
R: |
D. |
D:
R: |
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Hint |
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19. |
What is the equation of a parabola that is translated 3 units left and 2 units up from the parabola  ? |
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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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20. |
What is the equation of the hyperbola whose vertices are at (-4, 1) and (2, 1), and whose conjugate axis is of length 4 units? |
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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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