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1. |
Which is the graph of the equation y = 2x2 - 1? |
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A. |
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B. |
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C. |
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D. |
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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, 4 |
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C. |
-4 |
D. |
-2 |
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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. |
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B. |
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C. |
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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. |
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B. |
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C. |
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D. |
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Hint |
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5. |
Use the quadratic formula to solve 2x2 + 7x + 4 = 0. Approximate the solutions to the nearest hundredth. |
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A. |
-5.56, -1.44 |
B. |
-3.35, -0.15 |
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C. |
-2.78, -0.72 |
D. |
1.28, 3.66 |
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Hint |
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6. |
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. |
$242,000 |
B. |
$234,000 |
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C. |
$250,000 |
D. |
$258,000 |
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Hint |
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7. |
Lance is planning to invest $5000 for a period of 3 years. He has a choice of four different investments. Which of the combinations of interest rates and compounding below will earn the most money? |
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A. |
7.125%, quarterly |
B. |
7.2%, annually |
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C. |
7.1%, monthly |
D. |
7%, daily |
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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. |
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D. |
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Hint |
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9. |
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. |
2 |
D. |
4 |
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Hint |
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10. |
Solve x2 – 8x + 16 = 13 by taking the square root of each side. |
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A. |
-4 |
B. |
-2 |
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C. |
2 |
D. |
4 |
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Hint |
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11. |
For equations of the form y = ax, where a is a constant, what is true about a if the y-values change little for small values of x, but increase quickly for large x values? |
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A. |
0 < a < 1 |
B. |
–1 < a < 0 |
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C. |
a = 1 |
D. |
a > 1 |
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Hint |
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12. |
Use a graph to approximate 31.2. |
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A. |
3.7 |
B. |
0.27 |
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C. |
5.4 |
D. |
3.12 |
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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. |
62.5, 156.25, 390.625 |
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C. |
62.5, 312.5, 1562.5 |
D. |
100, 250, 1000 |
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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. |
exponential |
D. |
dependent |
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Hint |
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