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1. |
Find the equation of the axis of symmetry of the graph of
y = 2x2 - 8x + 5. |
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A. |
x = 2 |
B. |
x = -4 |
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C. |
x = -2 |
D. |
x = 4 |
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Hint |
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2. |
Solve a2 + 16 = 0 by graphing. |
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A. |
 |
B. |
-4, 4 |
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C. |
-4 |
D. |
4 |
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Hint |
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3. |
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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4. |
Use the quadratic formula to solve 6x2 - x - 1 = 0. |
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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. |
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B. |
-1, -4 |
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C. |
-1 |
D. |
5 |
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Hint |
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6. |
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. |
$4279.35 |
D. |
$4011.62 |
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Hint |
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7. |
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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8. |
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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9. |
Find the vertex of y = –2x2 + 4x – 3, and tell whether it is a maximum or minimum. |
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A. |
(–1, 1), maximum |
B. |
(1, –1), maximum |
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C. |
(–1, –9), maximum |
D. |
(1, 3), minimum |
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Hint |
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10. |
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. |
10 |
B. |
3 |
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C. |
15 |
D. |
2 |
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Hint |
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11. |
Use a graph to approximate 31.2. |
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A. |
0.27 |
B. |
3.7 |
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C. |
5.4 |
D. |
3.12 |
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Hint |
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12. |
Nancy invests $100 in one account for ten years at a 9% interest rate compounded annually, and she invests $150 in an account for 10 years at a 6% interest rate compounded semi-annually. How much money will she have in the accounts after 10 years? |
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A. |
$505.36 |
B. |
$507.65 |
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C. |
$236.74 |
D. |
$270.92 |
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Hint |
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13. |
Find the next two terms of the geometric sequence 50, 40, 32, … |
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A. |
25.6, 20.48 |
B. |
24, 16 |
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C. |
28.5, 25.52 |
D. |
26, 22 |
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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. |
dependent |
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C. |
exponential |
D. |
geometric |
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Hint |
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