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1. |
A best-fit line drawn on a scatter plot ________ |
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A. |
must be drawn through the first and last data points. |
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B. |
is a line that goes through every data point. |
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C. |
approximates the linear relationship of data points. |
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D. |
always has a positive slope. |
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Hint |
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2. |
Simplify  |
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A. |
2k - j2k3 |
B. |
2jk - j2k3 |
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C. |
4k - j2k3 |
D. |
2k - j2k |
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Hint |
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3. |
Simplify (q2 - 4q + 24) ÷ (q + 2) |
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A. |
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B. |
q + 6 + 36 |
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C. |
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D. |
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Hint |
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4. |
The focus of a parabola has coordinates (2, 3). The equation of the directrix is x = 0. Find an equation of the parabola. |
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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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5. |
Find the arithmetic means of the sequence  |
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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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6. |
A bag contains 7 blue marbles, 8 green marbles, 15 red marbles, and 10 yellow marbles. Find the probability of randomly drawing without replacement, a blue marble and then a red. |
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A. |
 or about 0.0673 |
B. |
 or about 0.0438 |
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C. |
 or about 0.2273 |
D. |
 or about 0.0656 |
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Hint |
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7. |
Find the value of j rounded to the nearest tenth. |
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A. |
49.3 |
B. |
197.1 |
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C. |
13.2 |
D. |
663.4 |
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Hint |
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8. |
Find the expansion of  . |
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A. |
a4 + 8a3 + 16a2 + 8a + 2 |
B. |
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C. |
16a + a3 + 6a2 + 16a + 16 |
D. |
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Hint |
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9. |
Name the property illustrated by the equation 5 ·? (-2 – 7) = 5 ·? -2 – 5 ·? 7. |
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A. |
Commutative Property |
B. |
Inverse Property |
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C. |
Associative Property |
D. |
Distributive Property |
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Hint |
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10. |
Identify the multiplicative inverse of 2.5. |
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A. |
0.5 |
B. |
0.25 |
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C. |
5.2 |
D. |
0.4 |
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Hint |
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11. |
If  find f (-9). |
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A. |
1 |
B. |
-1 |
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C. |
5 |
D. |
-5 |
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Hint |
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12. |
What is the inequality represented in the graph? |
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A. |
x + 2y > 4 |
B. |
x + 2y  4 |
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C. |
x + 2y  4 |
D. |
x + 2y > 4 |
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Hint |
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13. |
Graph the inequality y -| x | + 3. |
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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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14. |
 |
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A. |
72 |
B. |
6 |
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C. |
36 |
D. |
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Hint |
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15. |
What must be done to the quadratic expression ax2 + bx in order to complete the square? |
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A. |
find one fourth of b and add to original |
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B. |
find one half of b, square this result, and add to original |
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C. |
square b, then find one half of the result, and add to original. |
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D. |
square b and add to original |
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Hint |
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16. |
Find all zeros of  . |
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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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17. |
Let f and g be polynomials of degree 3. Is it true that  ? |
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A. |
It is true in some cases. |
B. |
Yes, always. |
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C. |
No, it is only true for polynomials of degree 1. |
D. |
No, never. |
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Hint |
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18. |
Find the x- and y-intercepts of  . |
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A. |
x: , y: no intercept |
B. |
x: 7, y:  |
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C. |
x: no intercept, y: |
D. |
x:, y: |
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Hint |
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19. |
A square root function,  , can be used to represent income made on an investment, with x being the amount originally spent, and f(x) being the profit. How much money would have to be spent in order to make $50? |
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A. |
$20 |
B. |
$2050 |
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C. |
$2000 |
D. |
$7.91 |
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Hint |
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20. |
Suppose x varies directly with y. If y increases by a factor of 2, what will happen to x? |
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A. |
It will increase by a factor of 4. |
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B. |
It will increase by a factor of 2. |
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C. |
It will decrease by a factor of 2. |
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D. |
It will decrease by a factor of 4. |
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Hint |
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