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1. |
The vertex of the graph of the equation y = -x2 + 6x + 1 is |
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A. |
both a maximum and a minimum |
B. |
a maximum |
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C. |
neither a maximum nor a minimum |
D. |
a minimum |
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Hint |
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2. |
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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3. |
Solve x2 + 4x + 4 = 0 by graphing. |
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A. |
-4, 4 |
B. |
4 |
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C. |
-2, 2 |
D. |
-2 |
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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 6x2 - x - 1 = 0. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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6. |
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. |
1.28, 3.66 |
D. |
-2.78, -0.72 |
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Hint |
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7. |
What is the y-intercept of the graph of y = 4x - 2? |
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A. |
-2 |
B. |
0 |
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C. |
-1 |
D. |
 |
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Hint |
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8. |
Which equation represents exponential decay? |
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A. |
y = 1.7(1.06)x |
B. |
y = 2.62(1.22)x |
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C. |
y = 0.86(1.46)x |
D. |
y = 1.05(0.95)x |
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Hint |
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9. |
Solve x2 – 12x + 34 = 0 by taking the square root of each side. |
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A. |
 |
B. |
{6} |
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C. |
{5, 7} |
D. |
 |
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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 solution if a is negative |
B. |
any negative solution |
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C. |
any positive solution |
D. |
any solution if  is negative |
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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. |
–1 < a < 0 |
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C. |
a = 1 |
D. |
0 < a < 1 |
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Hint |
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12. |
Nancy invests $100 in one account for ten years at a 9% interest rate compounded annually, and she invests $150 in an account for 10 years at a 6% interest rate compounded semi-annually. How much money will she have in the accounts after 10 years? |
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A. |
$507.65 |
B. |
$505.36 |
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C. |
$236.74 |
D. |
$270.92 |
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Hint |
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13. |
Determine whether the sequence 3, 12, 48, 192 is geometric. If so, find its common ratio. |
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A. |
geometric, r = 4 |
B. |
not geometric |
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C. |
geometric, r = 9 |
D. |
geometric, r = 3 |
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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. |
exponential |
B. |
recursive |
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C. |
geometric |
D. |
dependent |
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Hint |
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