| |
| |
1. |
Solve 3 < 2t - 1 < 15. |
| |
|
A. |
{t | 4 < t < 16} |
B. |
{t | 2 < t < 8} |
| |
|
C. |
{t | 2 < t < 16} |
D. |
{t | 3 < t < 8} |
| |
|
Hint |
|
| |
2. |
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? |
| |
|
 |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
3. |
Which element is in row 3, column 1? |
| |
|
 |
| |
|
A. |
4 |
B. |
6 |
| |
|
C. |
9 |
D. |
-1 |
| |
|
Hint |
|
| |
4. |
Find  |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
5. |
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'. |
| |
|
 |
| |
|
A. |
A'(-1, 1), B'(1, -3) |
| |
|
B. |
A'(1, 1), B'(-1, -3) |
| |
|
C. |
A'(-1, -3), B'(1, 1) |
| |
|
D. |
A'(1, -3), B'(1, 1) |
| |
|
Hint |
|
| |
6. |
Does the inverse of  exist? If it does not exist, explain why not. |
| |
|
A. |
No; the determinant equals 0. |
| |
|
B. |
Yes |
| |
|
C. |
No; the elements of the principal diagonal are not 1. |
| |
|
D. |
No; the matrix is not square. |
| |
|
Hint |
|
| |
7. |
Write the matrix equation  as a system of linear equations. |
| |
|
A. |
-2s + t = 12
5s + 8t = 7 |
B. |
-2s = 7
5t = 12 |
| |
|
C. |
-2s + 5t = 7
s + 8t = 12 |
D. |
-2s + t = 7
5s + 8t = 12 |
| |
|
Hint |
|
| |
8. |
Express  using exponents. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
9. |
Use the graph to determine the solution(s) of
x2 - x - 6 = 0. |
| |
|
 |
| |
|
A. |
-3, 2 |
B. |
-2 |
| |
|
C. |
-6 |
D. |
-2, 3 |
| |
|
Hint |
|
| |
10. |
What is the polynomial function of least degree with integral coefficients that has zeros 2 and 3i? |
| |
|
A. |
y = x2 + x - 6 |
B. |
y = x3 - 2x2 + 9x - 18 |
| |
|
C. |
y = x2 - 5x - 6 |
D. |
y = x3 - 2x2 - 9x + 18 |
| |
|
Hint |
|
| |
11. |
Solve  . |
| |
|
A. |
4, 16 |
B. |
-4, 2 |
| |
|
C. |
4 |
D. |
16 |
| |
|
Hint |
|
| |
12. |
If f(x) = 2x and g(x) = x + 4, find  |
| |
|
A. |
7 |
B. |
13 |
| |
|
C. |
1 |
D. |
-1 |
| |
|
Hint |
|
| |
13. |
The table shows the average heights (in centimeters) of females ages 1-14. If this trend continues, about how tall will an average fifteen-year-old female be? |
| |
|
 |
| |
|
A. |
156.9 cm |
B. |
168.5 cm |
| |
|
C. |
160.3 cm |
D. |
163.7 cm |
| |
|
Hint |
|
| |
14. |
When finding the equation for a line of fit for a scatter plot, you should use __________. |
| |
|
A. |
the point most characteristic of the scatter plot |
B. |
two points that you think represent the data well |
| |
|
C. |
the first and last points on the plot, with respect to the horizontal |
D. |
all of the points on the plot |
| |
|
Hint |
|
| |
15. |
A line of fit is drawn on a scatter plot showing the number of pets owned by automobile owners and the number of miles driven each month. What would probably be the best description of the slope of this line? |
| |
|
A. |
undefined |
B. |
positive |
| |
|
C. |
zero |
D. |
negative |
| |
|
Hint |
|
| |
16. |
A cellular telephone company charges $0.20 per minute or fraction thereof. If Miguel, a customer of this company, talks on his cell phone for 23.27 minutes, what will his charges be for that phone call? |
| |
|
A. |
$4.80 |
B. |
$4.65 |
| |
|
C. |
$4.60 |
D. |
$4.66 |
| |
|
Hint |
|
| |
17. |
Graph the inequality y  -| x | + 3. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
18. |
Find  |
| |
|
A. |
 |
B. |
q – 9 |
| |
|
C. |
 |
D. |
q + 9 |
| |
|
Hint |
|
| |
19. |
Solve  |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
20. |
Write the expression  in quadratic form. |
| |
|
A. |
 |
B. |
cannot be done, since  |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
|
|