| |
| |
1. |
What is the equation of the graph shown? |
| |
|
 |
| |
|
A. |
f(x) = -2x2 + 2x - 1 |
| |
|
B. |
f(x) = 2x2 + 2x + 1 |
| |
|
C. |
f(x) = -2x2 + 2x + 1 |
| |
|
D. |
f(x) = 2x2 - 2x + 1 |
| |
|
Hint |
|
| |
2. |
Solve x2 + 4x + 4 = 0 by graphing. |
| |
|
A. |
-2, 2 |
B. |
4 |
| |
|
C. |
-4, 4 |
D. |
-2 |
| |
|
Hint |
|
| |
3. |
Use the quadratic formula to solve 6x2 - x - 1 = 0. |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
4. |
Which is the graph of y = 2.5x? |
| |
|
A. |
 |
B. |
 |
| |
|
C. |
 |
D. |
 |
| |
|
Hint |
|
| |
5. |
Which equation represents exponential decay? |
| |
|
A. |
y = 2.62(1.22)x |
B. |
y = 1.05(0.95)x |
| |
|
C. |
y = 1.7(1.06)x |
D. |
y = 0.86(1.46)x |
| |
|
Hint |
|
| |
6. |
Twyla puts $1000 in a savings account that pays 4% interest, compounded monthly. How much money will be in the account 3 years later if she makes no more deposits? |
| |
|
A. |
$1120.00 |
B. |
$1124.86 |
| |
|
C. |
$1010.03 |
D. |
$1127.27 |
| |
|
Hint |
|
| |
7. |
The property of a parabola that allows it to be folded in half so that each half matches the other exactly is called what? |
| |
|
A. |
minimum |
B. |
vertex |
| |
|
C. |
symmetry |
D. |
maximum |
| |
|
Hint |
|
| |
8. |
The sum of two numbers is 12, and the product of the numbers is 36. What are the numbers? |
| |
|
A. |
7 and 5 |
B. |
9 and 4 |
| |
|
C. |
6 and 9 |
D. |
6 and 6 |
| |
|
Hint |
|
| |
9. |
Solve x2 – 12x + 34 = 0 by taking the square root of each side. |
| |
|
A. |
 |
B. |
{6} |
| |
|
C. |
{5, 7} |
D. |
 |
| |
|
Hint |
|
| |
10. |
Solve 0.25x2 – 7x – 15 = 0. |
| |
|
A. |
{–2, 30} |
B. |
{3, 15} |
| |
|
C. |
{4, 30} |
D. |
{–5, 3} |
| |
|
Hint |
|
| |
11. |
Which method of solving quadratic equations is best suited for the equation x2 – 18x = 0 |
| |
|
A. |
completing the square |
B. |
graphing |
| |
|
C. |
quadratic formula |
D. |
factoring |
| |
|
Hint |
|
| |
12. |
Given the coordinates (0, 3), (1, 11), (2, 19), (3, 27), would a graph of these points exhibit exponential behavior? |
| |
|
A. |
no, it would display linear behavior |
B. |
no, it would not display exponential or linear behavior |
| |
|
C. |
yes, exponential and linear behavior |
D. |
yes, exponential behavior only |
| |
|
Hint |
|
| |
13. |
What are the next three terms of the geometric sequence 4, 10, 25,…? |
| |
|
A. |
100, 250, 1000 |
B. |
100, 400, 1600 |
| |
|
C. |
62.5, 156.25, 390.625 |
D. |
62.5, 312.5, 1562.5 |
| |
|
Hint |
|
| |
14. |
Find the next two terms of the geometric sequence 50, 40, 32, … |
| |
|
A. |
28.5, 25.52 |
B. |
24, 16 |
| |
|
C. |
26, 22 |
D. |
25.6, 20.48 |
| |
|
Hint |
|
|
|