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1. |
What is the equation of the graph shown? |
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A. |
y = -x2 - 2x - 1 |
B. |
y = x2 - 2x + 1 |
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C. |
y = x2 + 2x + 1 |
D. |
y = -x2 +2x - 1 |
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Hint |
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2. |
What are the real roots of the quadratic equation whose related function is graphed below? |
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A. |
4 |
B. |
-4 |
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C. |
-4, 4 |
D. |
-2 |
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Hint |
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3. |
Solve x2 + 4x + 4 = 0 by graphing. |
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A. |
-2 |
B. |
4 |
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C. |
-4, 4 |
D. |
-2, 2 |
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Hint |
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4. |
Which equation represents exponential decay? |
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A. |
y = 0.86(1.46)x |
B. |
y = 1.05(0.95)x |
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C. |
y = 1.7(1.06)x |
D. |
y = 2.62(1.22)x |
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Hint |
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5. |
If a $5000 piece of equipment looses value at a rate of 5% per year, how much will it be worth after 5 years? |
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A. |
$6381.41 |
B. |
$3868.90 |
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C. |
$4011.62 |
D. |
$4279.35 |
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Hint |
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6. |
Solve x2 - 4x + 1 = 0 by completing the square. |
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A. |
1, 3 |
B. |
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C. |
 |
D. |
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Hint |
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7. |
Solve 2z2 + z - 4 = 0 by completing the square. |
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A. |
-2, 1 |
B. |
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C. |
 |
D. |
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Hint |
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8. |
Suppose the equation of the axis of symmetry is x = 2. What is the y-coordinate of the vertex? |
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A. |
-2 |
B. |
2 |
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C. |
4 |
D. |
cannot be determined from given information |
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Hint |
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9. |
Which method of solving quadratic equations is best suited for the equation x2 – 18x = 0 |
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A. |
quadratic formula |
B. |
factoring |
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C. |
completing the square |
D. |
graphing |
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Hint |
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10. |
Which of the following equations will have exactly 1 real root? |
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A. |
x2 – 6x – 9 |
B. |
4x2 – 8x + 4 |
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C. |
9x2 + 12x – 4 |
D. |
2x2 + 5x – 16 |
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Hint |
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11. |
A guest on a talk show tends to receive many phone calls right after she is on the show, and then the calls become less frequent. This can be represented by the equation y = 30(0.92)d, where y is the number of phone calls after d days. How many phone calls should she expect after a week? |
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A. |
28 |
B. |
23 |
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C. |
17 |
D. |
2 |
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Hint |
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12. |
Given the coordinates (0, 3), (1, 11), (2, 19), (3, 27), would a graph of these points exhibit exponential behavior? |
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A. |
no, it would display linear behavior |
B. |
yes, exponential behavior only |
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C. |
yes, exponential and linear behavior |
D. |
no, it would not display exponential or linear behavior |
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Hint |
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13. |
Determine whether the sequence 3, 12, 48, 192 is geometric. If so, find its common ratio. |
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A. |
geometric, r = 9 |
B. |
geometric, r = 3 |
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C. |
not geometric |
D. |
geometric, r = 4 |
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Hint |
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14. |
A formula in which the nth term of a sequence is expressed in terms of the previous term, as in  is called what? |
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A. |
recursive |
B. |
geometric |
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C. |
dependent |
D. |
exponential |
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Hint |
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