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1. |
The vertex of the graph of the equation y = -x2 + 6x + 1 is |
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A. |
a minimum |
B. |
a maximum |
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C. |
both a maximum and a minimum |
D. |
neither a maximum nor a minimum |
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Hint |
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2. |
What is the equation of the graph shown? |
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 |
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A. |
f(x) = 2x2 - 2x + 1 |
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B. |
f(x) = -2x2 + 2x - 1 |
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C. |
f(x) = 2x2 + 2x + 1 |
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D. |
f(x) = -2x2 + 2x + 1 |
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Hint |
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3. |
Solve a2 + 16 = 0 by graphing. |
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A. |
4 |
B. |
-4 |
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C. |
-4, 4 |
D. |
 |
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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 + 2x - 8 = 0. |
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A. |
-4 |
B. |
-4, 2 |
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C. |
-2 |
D. |
-4, -2 |
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Hint |
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6. |
Use the quadratic formula to solve 3y2 + 2 = 8y. Approximate the solutions to the nearest hundredth. |
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A. |
0.43, 2.87 |
B. |
0.28, 2.39 |
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C. |
-0.64, 1.32 |
D. |
0.56, 4.77 |
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Hint |
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7. |
Approximate 5(31.8) to the nearest hundredth. |
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A. |
36.12 |
B. |
29.16 |
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C. |
32.90 |
D. |
27.42 |
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Hint |
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8. |
Solve 3x + 2 = 32x - 1. |
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A. |
0 |
B. |
 |
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C. |
6 |
D. |
3 |
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Hint |
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9. |
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. |
$258,000 |
B. |
$250,000 |
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C. |
$234,000 |
D. |
$242,000 |
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Hint |
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10. |
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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