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1. |
What is the equation of the graph shown? |
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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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2. |
What are the real roots of the quadratic equation whose related function is graphed below? |
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A. |
-4 |
B. |
-2 |
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C. |
4 |
D. |
-4, 4 |
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Hint |
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3. |
Solve x2 + 4x + 4 = 0 by graphing. |
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A. |
4 |
B. |
-2 |
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C. |
-4, 4 |
D. |
-2, 2 |
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Hint |
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4. |
Use the quadratic formula to solve x2 + 2x - 8 = 0. |
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A. |
-4 |
B. |
-2 |
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C. |
-4, -2 |
D. |
-4, 2 |
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Hint |
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5. |
What is the y-intercept of the graph of y = 4x - 2? |
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A. |
0 |
B. |
-1 |
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C. |
-2 |
D. |
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Hint |
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6. |
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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7. |
The property of a parabola that allows it to be folded in half so that each half matches the other exactly is called what? |
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A. |
minimum |
B. |
vertex |
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C. |
symmetry |
D. |
maximum |
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Hint |
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8. |
Solve x2 – 16x – 17 = 0 by completing the square. |
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A. |
{1, 17} |
B. |
{–1, 17} |
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C. |
{1, 13} |
D. |
{–1, 13} |
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Hint |
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9. |
Which of the following equations will have exactly 1 real root? |
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A. |
4x2 – 8x + 4 |
B. |
2x2 + 5x – 16 |
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C. |
x2 – 6x – 9 |
D. |
9x2 + 12x – 4 |
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Hint |
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10. |
Use a graph to approximate 31.2. |
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A. |
3.7 |
B. |
5.4 |
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C. |
0.27 |
D. |
3.12 |
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Hint |
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11. |
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. |
$1,713.82 |
B. |
$741.02 |
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C. |
$713.82 |
D. |
$1,741.02 |
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Hint |
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12. |
Suppose Tyler sprayed around the house for ants. Which formula would be used to find the number of ants still alive after a certain time if the number of ants was changing exponentially? |
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A. |
compound interest |
B. |
exponential decay |
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C. |
exponential growth |
D. |
cannot be determined from given information |
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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. |
100, 250, 1000 |
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C. |
62.5, 312.5, 1562.5 |
D. |
62.5, 156.25, 390.625 |
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Hint |
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14. |
Find the geometric mean in the sequence 4, , 196. |
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A. |
28 only |
B. |
7 or –7 |
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C. |
7 only |
D. |
28 or –28 |
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Hint |
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