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1. |
Find the coordinates of the vertex of the graph of the equation
y = x2 - 5x + 7. |
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A. |
 |
B. |
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C. |
(0, 7) |
D. |
(5, 7) |
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Hint |
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2. |
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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3. |
What are the real roots of the quadratic equation whose related function is graphed below? |
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A. |
-1, -3 |
B. |
-3, 1 |
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C. |
3, -1 |
D. |
3 |
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Hint |
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4. |
Which is the graph of y = 2.5x? |
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A. |
 |
B. |
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C. |
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D. |
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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. |
$3868.90 |
B. |
$4011.62 |
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C. |
$4279.35 |
D. |
$6381.41 |
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Hint |
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6. |
Solve x2 - 4x + 1 = 0 by completing the square. |
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A. |
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B. |
1, 3 |
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C. |
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D. |
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Hint |
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7. |
The sum of two numbers is 2, and the product is 3. What are the numbers? |
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A. |
–1 and 3 |
B. |
1 and 1 |
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C. |
no solution |
D. |
1 and –3 |
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Hint |
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8. |
Solve x2 – 12x + 34 = 0 by taking the square root of each side. |
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A. |
{5, 7} |
B. |
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C. |
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D. |
{6} |
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Hint |
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9. |
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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10. |
Which method of solving quadratic equations is best suited for the equation x2 – 18x = 0 |
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A. |
quadratic formula |
B. |
completing the square |
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C. |
graphing |
D. |
factoring |
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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 = 20(0.53)d, where y is the number of phone calls after d days. On what day should she expect to have 3 calls? |
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A. |
3 |
B. |
2 |
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C. |
15 |
D. |
10 |
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Hint |
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12. |
Suppose Tyler sprayed around the house for ants. Which formula would be used to find the number of ants still alive after a certain time if the number of ants was changing exponentially? |
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A. |
exponential growth |
B. |
exponential decay |
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C. |
compound interest |
D. |
cannot be determined from given information |
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Hint |
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13. |
What are the next three terms of the geometric sequence 4, 10, 25,…? |
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A. |
100, 400, 1600 |
B. |
100, 250, 1000 |
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C. |
62.5, 156.25, 390.625 |
D. |
62.5, 312.5, 1562.5 |
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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. |
geometric |
B. |
recursive |
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C. |
exponential |
D. |
dependent |
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Hint |
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