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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. |
(5, 7) |
B. |
(0, 7) |
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C. |
 |
D. |
 |
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Hint |
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2. |
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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3. |
Approximate 5(31.8) to the nearest hundredth. |
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A. |
32.90 |
B. |
29.16 |
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C. |
27.42 |
D. |
36.12 |
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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 = 2.62(1.22)x |
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C. |
y = 1.05(0.95)x |
D. |
y = 1.7(1.06)x |
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Hint |
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5. |
The Mendoza family just bought a house for $180,000. If the value of the house increases at a rate of 3% per year, about how much will it be worth in 10 years? |
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A. |
$234,000 |
B. |
$242,000 |
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C. |
$250,000 |
D. |
$258,000 |
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Hint |
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6. |
Find the value of c that makes x2 + 16x + c a perfect square. |
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A. |
16 |
B. |
8 |
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C. |
64 |
D. |
-64 |
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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. |
Suppose the equation of the axis of symmetry is x = 2. What is the y-coordinate of the vertex? |
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A. |
cannot be determined from given information |
B. |
2 |
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C. |
4 |
D. |
-2 |
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Hint |
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9. |
The sum of two numbers is 12, and the product of the numbers is 36. What are the numbers? |
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A. |
6 and 6 |
B. |
6 and 9 |
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C. |
7 and 5 |
D. |
9 and 4 |
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Hint |
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10. |
How many real roots exist if the discriminant of the equation = 0? |
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A. |
1 |
B. |
cannot be determined from given information |
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C. |
0 |
D. |
2 |
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Hint |
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11. |
Which of the following equations will have exactly 1 real root? |
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A. |
2x2 + 5x – 16 |
B. |
4x2 – 8x + 4 |
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C. |
x2 – 6x – 9 |
D. |
9x2 + 12x – 4 |
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Hint |
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12. |
Use a graph in order to approximate  . |
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A. |
112.6 |
B. |
0.0045 |
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C. |
133.4 |
D. |
0.0089 |
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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. |
28.5, 25.52 |
B. |
26, 22 |
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C. |
25.6, 20.48 |
D. |
24, 16 |
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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. |
exponential |
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C. |
dependent |
D. |
geometric |
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Hint |
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