| |
| |
1. |
Solve |4x + 2| + 6 = 0. |
| |
|
A. |
 |
B. |
1 |
| |
|
C. |
-2 |
D. |
2 |
| |
|
Hint |
|
| |
2. |
Use Cramer's rule to solve the system of equations. 
|
| |
|
A. |
(0.2, 0.4) |
B. |
(0.011, 0.0055) |
| |
|
C. |
(0.4, 0.2) |
D. |
(-0.4, -0.2) |
| |
|
Hint |
|
| |
3. |
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. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
4. |
Solve the system of equations. 
|
| |
|
A. |
infinite number of solutions |
B. |
(0, -2, 7) |
| |
|
C. |
(1, 1, 2) |
D. |
no solution |
| |
|
Hint |
|
| |
5. |
Express 45,280,000 in scientific notation. |
| |
|
A. |
4.528 × 106 |
B. |
45.28 × 106 |
| |
|
C. |
4.528 × 107 |
D. |
4.528 × 10-7 |
| |
|
Hint |
|
| |
6. |
Determine which expression is not a polynomial. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
x2 - y2 + z2 |
D. |
 |
| |
|
Hint |
|
| |
7. |
Find the area of the parallelogram. |
| |
|
 |
| |
|
A. |
(36a2 - 49b2) cm2 |
| |
|
B. |
(36a2 + 49b2) cm2 |
| |
|
C. |
(12a2 + 14b2) cm2 |
| |
|
D. |
(36a2 - 84ab - 49b2) cm2 |
| |
|
Hint |
|
| |
8. |
Write the fourth root of 625. |
| |
|
A. |
5 |
B. |
 |
| |
|
C. |
4(625) |
D. |
6254 |
| |
|
Hint |
|
| |
9. |
What is the distance between points with coordinates (1.32, 0.27) and (1.07, -0.33). |
| |
|
A. |
0.39 unit |
B. |
1.02 units |
| |
|
C. |
0.81 unit |
D. |
0.65 unit |
| |
|
Hint |
|
| |
10. |
Solve x2 - 6x + 10 = 0 by completing the square. |
| |
|
A. |
-3 ± i |
B. |
3 ± i |
| |
|
C. |
1 ± i |
D. |
2, 4 |
| |
|
Hint |
|
| |
11. |
Find the coordinates of the foci of a hyperbola with equation  |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
12. |
What is the polynomial function of least degree with integral coefficients that has zeros 2 and 3i? |
| |
|
A. |
y = x3 - 2x2 + 9x - 18 |
B. |
y = x2 + x - 6 |
| |
|
C. |
y = x2 - 5x - 6 |
D. |
y = x3 - 2x2 - 9x + 18 |
| |
|
Hint |
|
| |
13. |
When finding the equation for a line of fit for a scatter plot, you should use __________. |
| |
|
A. |
two points that you think represent the data well |
B. |
all of the points on the plot |
| |
|
C. |
the first and last points on the plot, with respect to the horizontal |
D. |
the point most characteristic of the scatter plot |
| |
|
Hint |
|
| |
14. |
What translation matrix should be used to translate a figure with five vertices up 3 units and right 2 units? |
| |
|
A. |
 |
| |
|
B. |
 |
| |
|
C. |
 |
| |
|
D. |
 |
| |
|
Hint |
|
| |
15. |
Evaluate  |
| |
|
A. |
38 |
B. |
–128 |
| |
|
C. |
–38 |
D. |
128 |
| |
|
Hint |
|
| |
16. |
Solve 2.4x + 1.7y = 8.2, 3.8x – 0.8y = 5.3. Round to the nearest hundredth. |
| |
|
A. |
(–1.86, 2.20) |
B. |
(1.86, 2.20) |
| |
|
C. |
(1.86, –2.20) |
D. |
(–1.86, –2.20) |
| |
|
Hint |
|
| |
17. |
Given that  and  , find  . |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
18. |
What is equidistant to all of the points on a circle? |
| |
|
A. |
tangent line |
B. |
radius |
| |
|
C. |
diameter |
D. |
center |
| |
|
Hint |
|
| |
19. |
Simplify  . |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
20. |
Shrinivas deposited $1300 in an account which pays 8% annual interest, compounded continuously. How long will it take to reach $3500? |
| |
|
A. |
1.2 years |
B. |
12.4 years |
| |
|
C. |
176 years |
D. |
9.2 years |
| |
|
Hint |
|
|
|