| |
| |
1. |
Graph the solution set of  |
| |
|
A. |
 |
| |
|
B. |
 |
| |
|
C. |
 |
| |
|
D. |
 |
| |
|
Hint |
|
| |
2. |
Which function is not linear? |
| |
|
A. |
f(x) = 14x + 7 |
B. |
f(x) = 2x3 |
| |
|
C. |
f(x) = 8 |
D. |
 |
| |
|
Hint |
|
| |
3. |
State the slope of the line graphed below. |
| |
|
 |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
4. |
Which equation describes graph A? |
| |
|
 |
| |
|
A. |
y = 2.25| x | - 1 |
B. |
y = | 2.25x | |
| |
|
C. |
y = | x - 1 | |
D. |
y = 2.25x - 1 |
| |
|
Hint |
|
| |
5. |
What is the first step in solving the system of equations using the elimination method? 
|
| |
|
A. |
Solve the first equation for x. |
| |
|
B. |
Subtract the second equation from the first equation. |
| |
|
C. |
Add the equations. |
| |
|
D. |
Multiply the second equation by 2. |
| |
|
Hint |
|
| |
6. |
What is the first step in solving the matrix equation
 |
| |
|
A. |
Multiply each side of the matrix equation by the identity matrix. |
| |
|
B. |
Divide each side of the matrix equation by  |
| |
|
C. |
Find the inverse of |
| |
|
D. |
Multiply each side of the matrix equation by |
| |
|
Hint |
|
| |
7. |
Factor m3 - 4m2 + 6m - 24. |
| |
|
A. |
(m + 4)(m2 - 6) |
| |
|
B. |
m2(m - 4) + 6m - 24 |
| |
|
C. |
m(m2 - 4m + 6) - 24 |
| |
|
D. |
(m - 4)(m2 + 6) |
| |
|
Hint |
|
| |
8. |
Evaluate  |
| |
|
A. |
4 |
B. |
 |
| |
|
C. |
3 |
D. |
 |
| |
|
Hint |
|
| |
9. |
Simplify i17. |
| |
|
A. |
i |
B. |
-1 |
| |
|
C. |
-i |
D. |
1 |
| |
|
Hint |
|
| |
10. |
Find the axis of symmetry of the graph of g(x) = x2 - 5x + 2. |
| |
|
A. |
x = -5 |
B. |
x = 2 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
11. |
State the number of positive real zeros for the polynomial
f(x) = x3 + 4x2 + x + 5. |
| |
|
A. |
0 |
B. |
3 |
| |
|
C. |
1 |
D. |
2 |
| |
|
Hint |
|
| |
12. |
Find all of the rational zeros of the function p(x) = 2x3 + 3x2 - 11x - 6. |
| |
|
A. |
-6 |
B. |
-3, 2 |
| |
|
C. |
 |
D. |
-3, 1 |
| |
|
Hint |
|
| |
13. |
Evaluate | 5 (a – 2b) + 3 | if a = -3 and b = 7. |
| |
|
A. |
-85 |
B. |
82 |
| |
|
C. |
85 |
D. |
88 |
| |
|
Hint |
|
| |
14. |
Consider the function f (x) = -2(x + 8). Is this function a linear function? Why or why not? |
| |
|
A. |
Yes, the function can be written in the form f (x) = mx + b. |
| |
|
B. |
No, the function cannot be written in the form f (x) = mx + b. |
| |
|
C. |
No, f is not a function. |
| |
|
D. |
Yes, the coefficient of x is not zero. |
| |
|
Hint |
|
| |
15. |
What is always true of an n × n matrix? |
| |
|
A. |
It is a row matrix. |
B. |
It is a square matrix. |
| |
|
C. |
It has at least two rows and two columns. |
D. |
It is a column matrix. |
| |
|
Hint |
|
| |
16. |
Determine whether the pair of matrices  are inverses. |
| |
|
A. |
yes, because each entry in the second matrix is the reciprocal of its corresponding entry in the first matrix. |
B. |
yes, because A · B = I. |
| |
|
C. |
no, because fractions cannot be a part of an inverse |
D. |
no, because A · B  I |
| |
|
Hint |
|
| |
17. |
Factor 4x2 – 49. |
| |
|
A. |
(2x + 7)(2x – 7) |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
18. |
Find the vertex of the graph of the function  . |
| |
|
A. |
(–1, 4) |
B. |
(–1, –2) |
| |
|
C. |
(1, –2) |
D. |
(1, 4) |
| |
|
Hint |
|
| |
19. |
If f(7) = 12 and g(2) = 7, then what is the value of  ? |
| |
|
A. |
2 |
B. |
12 |
| |
|
C. |
84 |
D. |
7 |
| |
|
Hint |
|
| |
20. |
What is the domain and range of  ? |
| |
|
A. |
D: 
R:  |
B. |
D: 
R:  |
| |
|
C. |
D:
R: |
D. |
D:
R: |
| |
|
Hint |
|
|
|