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1. |
Find the coordinates of the vertex of the graph of the equation
y = -3x2 - 12x - 5. |
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A. |
(1, -20) |
B. |
(-2, 7) |
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C. |
(-4, -5) |
D. |
(2, -41) |
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Hint |
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2. |
The vertex of the graph of the equation y = -x2 + 6x + 1 is |
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A. |
neither a maximum nor a minimum |
B. |
both a maximum and a minimum |
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C. |
a maximum |
D. |
a minimum |
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Hint |
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3. |
Solve x2 – 6x + 5 = 0 by graphing. |
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A. |
1, 5 |
B. |
5 |
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C. |
-1 |
D. |
1 |
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Hint |
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4. |
A quadratic function has a maximum point at (1, 4). The roots of the related quadratic equation are -1 and 3. Which is the graph of the function? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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5. |
Use the quadratic formula to solve x2 + 4x + 5 = 0. |
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A. |
-1 |
B. |
 |
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C. |
-1, -4 |
D. |
5 |
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Hint |
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6. |
Solve x2 – 12x + 34 = 0 by taking the square root of each side. |
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A. |
 |
B. |
{5, 7} |
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C. |
{6} |
D. |
 |
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Hint |
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7. |
Solve 0.25x2 – 7x – 15 = 0. |
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A. |
{–5, 3} |
B. |
{4, 30} |
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C. |
{3, 15} |
D. |
{–2, 30} |
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Hint |
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8. |
Which method of solving quadratic equations should be used when only an estimated solution is necessary? |
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A. |
quadratic formula |
B. |
factoring |
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C. |
graphing |
D. |
completing the square |
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Hint |
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9. |
Use a graph in order to approximate  . |
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A. |
112.6 |
B. |
0.0045 |
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C. |
0.0089 |
D. |
133.4 |
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Hint |
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10. |
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 not display exponential or linear behavior |
B. |
yes, exponential and linear behavior |
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C. |
no, it would display linear behavior |
D. |
yes, exponential behavior only |
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Hint |
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11. |
Each year, new computers are built with better technology, making older ones less valuable. If the computers looses value at a rate of 20% per year, how much will a $1500 computer be worth in ten years? |
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A. |
near $0 |
B. |
$9,287.60 |
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C. |
$1,200 |
D. |
$161.06 |
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Hint |
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12. |
Suppose inflation of money is at a rate of 3% per year in the United States. How much will a $1 candy bar cost in 30 years? |
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A. |
$4.32 |
B. |
$1.90 |
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C. |
$0.40 |
D. |
$2.43 |
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Hint |
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13. |
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. |
geometric |
B. |
exponential |
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C. |
recursive |
D. |
dependent |
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Hint |
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14. |
Suppose that the sixth term of a geometric sequence is 1215, and the first term is 5. What is the second term? |
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A. |
9 |
B. |
15 |
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C. |
12.5 |
D. |
8 |
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Hint |
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