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1. |
Find the equation of the axis of symmetry of the graph of
y = 2x2 - 8x + 5. |
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A. |
x = 4 |
B. |
x = -2 |
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C. |
x = -4 |
D. |
x = 2 |
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Hint |
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2. |
Solve x2 – 6x + 5 = 0 by graphing. |
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A. |
5 |
B. |
-1 |
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C. |
1 |
D. |
1, 5 |
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Hint |
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3. |
Solve x2 + 4x + 4 = 0 by graphing. |
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A. |
-2 |
B. |
4 |
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C. |
-2, 2 |
D. |
-4, 4 |
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Hint |
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4. |
Use the quadratic formula to solve x2 + 4x + 5 = 0. |
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A. |
 |
B. |
-1 |
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C. |
5 |
D. |
-1, -4 |
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Hint |
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5. |
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. |
$1124.86 |
B. |
$1010.03 |
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C. |
$1120.00 |
D. |
$1127.27 |
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Hint |
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6. |
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. |
7.1%, monthly |
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C. |
7.2%, annually |
D. |
7%, daily |
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Hint |
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7. |
Find the value of c that makes x2 + 16x + c a perfect square. |
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A. |
64 |
B. |
16 |
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C. |
-64 |
D. |
8 |
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Hint |
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8. |
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. |
symmetry |
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C. |
vertex |
D. |
maximum |
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Hint |
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9. |
Solve 0.25x2 – 7x – 15 = 0. |
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A. |
{–2, 30} |
B. |
{4, 30} |
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C. |
{3, 15} |
D. |
{–5, 3} |
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Hint |
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10. |
Which method of solving quadratic equations should be used when only an estimated solution is necessary? |
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A. |
completing the square |
B. |
graphing |
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C. |
quadratic formula |
D. |
factoring |
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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. |
a > 1 |
B. |
0 < a < 1 |
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C. |
a = 1 |
D. |
–1 < a < 0 |
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Hint |
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12. |
Use a graph to approximate 31.2. |
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A. |
3.12 |
B. |
5.4 |
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C. |
0.27 |
D. |
3.7 |
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Hint |
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13. |
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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14. |
What is the eighth term of the geometric sequence whose first three terms are 3, 6, and 12? |
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A. |
384 |
B. |
768 |
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C. |
256 |
D. |
128 |
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Hint |
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