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1. |
Use the graph to determine the solution(s) of x2 - x - 6 = 0. |
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A. |
-3, 2 |
B. |
-2 |
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C. |
-2, 3 |
D. |
-6 |
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Hint |
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2. |
Find the axis of symmetry of the graph of g(x) = x2 - 5x + 2. |
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A. |
x = 2 |
B. |
 |
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C. |
 |
D. |
x = -5 |
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Hint |
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3. |
Solve the equation (x -2)(x + 2) = 0. |
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A. |
-2, 2 |
B. |
2, 0 |
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C. |
-2 |
D. |
2 |
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Hint |
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4. |
Solve x2 - 6x = 0 by graphing or by factoring. |
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A. |
0, 6 |
B. |
-6 |
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C. |
-6, 0 |
D. |
0 |
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Hint |
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5. |
Which value of c makes the trinomial x2 + 16x + c a perfect square? |
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A. |
256 |
B. |
64 |
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C. |
32 |
D. |
128 |
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Hint |
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6. |
Solve x2 - 4x + 1 = 0 by completing the square. |
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A. |
2 |
B. |
 |
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C. |
 |
D. |
1 |
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Hint |
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7. |
The roots of x2 + 4x + 7 are________. |
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A. |
imaginary |
B. |
real and irrational |
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C. |
real and imaginary |
D. |
real and rational |
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Hint |
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8. |
Solve x2 - 6x + 25 = 0. |
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A. |
-3 ± 4i |
B. |
3 ± 4i |
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C. |
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D. |
6 ± 8i |
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Hint |
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9. |
Find the sum of the roots of the equation x2 + 5x + 9 = 0. |
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A. |
-9 |
B. |
-5 |
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C. |
9 |
D. |
5 |
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Hint |
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10. |
Find the product of the roots of the equation 2x2 + 3x - 4 = 0. |
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A. |
-4 |
B. |
2 |
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C. |
-2 |
D. |
- |
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Hint |
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11. |
Find the vertex of the graph of the function f(x) = x2 - 6x + 5. |
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A. |
(-3, 4) |
B. |
(3, 4) |
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C. |
(-6, 5) |
D. |
(3, -4) |
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Hint |
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12. |
Find an equation for the parabola shown in the graph. |
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A. |
y = (x + 2)2 - 4 |
B. |
y = (x + 2)2 - 4 |
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C. |
y = (x - 2)2 + 4 |
D. |
y = (x - 2)2 - 4 |
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Hint |
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13. |
Solve x2 + 2x - 15 > 0. |
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A. |
{x | x < -5 or x > 3} |
B. |
{x | -5 < x < 3} |
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C. |
-3, 5 |
D. |
{x | x < -3 or x > 5} |
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Hint |
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14. |
Solve 9t2 - 15t + 4 0. |
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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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15. |
Find the mean of the set {14, 16, 23, 9, 13, 31, 12, 28}. |
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A. |
16.5 |
B. |
15 |
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C. |
19 |
D. |
18.25 |
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Hint |
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16. |
Find the standard deviation of the set {15, 42, 30, 22, 19, 32} to the nearest hundredth. |
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A. |
10.03 |
B. |
9.91 |
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C. |
9.05 |
D. |
10.14 |
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Hint |
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17. |
The weights of the babies born in Martin County Hospital are normally distributed with a mean of 119 ounces and a standard deviation of 20 ounces. What percent of the babies have a birth weight between 59 and 179 ounces? |
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A. |
100% |
B. |
68% |
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C. |
99% |
D. |
95% |
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Hint |
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18. |
The curve shown is________. |
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A. |
normal |
B. |
not skewed |
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C. |
positively skewed |
D. |
negatively skewed |
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Hint |
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