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1. |
Which is the graph of the equation y = 2x2 - 1? |
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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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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. |
Solve a2 + 16 = 0 by graphing. |
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A. |
-4 |
B. |
 |
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C. |
-4, 4 |
D. |
4 |
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Hint |
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4. |
Use the quadratic formula to solve 3y2 + 2 = 8y. Approximate the solutions to the nearest hundredth. |
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A. |
0.56, 4.77 |
B. |
0.43, 2.87 |
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C. |
-0.64, 1.32 |
D. |
0.28, 2.39 |
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Hint |
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5. |
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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6. |
Which is the graph of y = 2.5x? |
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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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7. |
Twyla puts $1000 in a savings account that pays 4% interest, compounded monthly. How much money will be in the account 3 years later if she makes no more deposits? |
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A. |
$1010.03 |
B. |
$1124.86 |
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C. |
$1127.27 |
D. |
$1120.00 |
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Hint |
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8. |
Solve x2 - 4x + 1 = 0 by completing the square. |
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A. |
1, 3 |
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. |
4 |
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C. |
2 |
D. |
-2 |
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Hint |
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10. |
When using a quadratic equation of the form ax2 + bx + c = 0 to find distances, what should always be ignored? |
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A. |
any positive solution |
B. |
any solution if a is negative |
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C. |
any negative solution |
D. |
any solution if  is negative |
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Hint |
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11. |
Which method of solving quadratic equations is best suited for the equation x2 – 18x = 0 |
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A. |
graphing |
B. |
quadratic formula |
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C. |
factoring |
D. |
completing the square |
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Hint |
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12. |
Ricky invested $1000 in an account at 8% interest compounded quarterly. How much money will he have earned on the account after 7 years? |
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A. |
$741.02 |
B. |
$1,713.82 |
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C. |
$713.82 |
D. |
$1,741.02 |
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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, 312.5, 1562.5 |
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C. |
62.5, 156.25, 390.625 |
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. |
dependent |
B. |
geometric |
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C. |
recursive |
D. |
exponential |
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Hint |
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