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1. |
Simplify (7a4b) (8a7b6). |
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A. |
56a28b6 |
B. |
15a28b6 |
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C. |
56a11b7 |
D. |
15a11b7 |
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Hint |
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2. |
Evaluate  . Express the result in scientific notation. |
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A. |
8.0 × 10-7 |
B. |
0.8 × 10-8 |
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C. |
80 × 10-8 |
D. |
8.0 × 10-9 |
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Hint |
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3. |
Determine the slope of the line containing the points P(-7, -8) and
Q(3, 0). |
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A. |
 |
B. |
 |
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C. |
-2 |
D. |
2 |
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Hint |
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4. |
Solve the equation x2 = 0.81. |
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A. |
none of these is correct |
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B. |
x = 0.9 only |
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C. |
x = 0.9 or x = -0.9 |
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D. |
x = -0.9 only |
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Hint |
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5. |
The graph of a linear function is _______. |
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A. |
a straight line |
B. |
None of these is correct |
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C. |
a curved line |
D. |
a horizontal line only |
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Hint |
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6. |
If a rocket is fired from the ground with an initial velocity of 75 meters per second, then the height of the rocket after t seconds is h = 75t - 4.9t2. Find the height of the rocket after 3 seconds. |
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A. |
130.4 meters |
B. |
180.9 meters |
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C. |
252.5 meters |
D. |
221.6 meters |
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Hint |
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7. |
Simplify  |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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8. |
Which characteristic describes a graph that is linear and has direct variation. |
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A. |
Variables x and y are not proportional. |
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B. |
The equation has the form y = mx + b. |
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C. |
The graph does not pass through (0, 0). |
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D. |
The equation has the form y = mx. |
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Hint |
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9. |
Find the equation that has direct variation. |
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A. |
y = –3x – 1 |
B. |
y = 0.8x + 9 |
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C. |
y = 4x |
D. |
y = 5x + 1.3 |
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Hint |
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10. |
Find the graph that does not have direct variation. |
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A. |
 |
B. |
 |
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C. |
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D. |
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Hint |
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11. |
Find the situation that involves a decreasing linear relationship and has direct variation. |
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A. |
A bucket that begins at ground level and is lowered into a well at a rate of 1 foot per second. |
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B. |
A submarine that begins at the bottom of the ocean and is raised to the surface of the water at 15 meters per second. |
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C. |
An airplane that begins at 20,000 feet and descends for a landing on the ground at the airport. |
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D. |
The temperature that begins at 0°F at 6:00 a.m. rises 3°F every hour for 6 hours. |
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Hint |
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12. |
How many diagonals does a 25-sided polygon have? |
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A. |
25 |
B. |
300 |
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C. |
275 |
D. |
550 |
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Hint |
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13. |
What type of relationship does the equation have if its first differences are constant? |
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A. |
cubic |
B. |
constant |
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C. |
quadratic |
D. |
linear |
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Hint |
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14. |
Find the values for m and n which the conjecture (m – n)2 = m2 – n2 is false. |
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A. |
m = 1, n = 1 |
B. |
m = –2, n = 0 |
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C. |
m = 1, n = 0 |
D. |
m = 1, n = 2 |
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Hint |
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15. |
Use the following table to find the amount of medicine remaining in the bloodstream after n hours. |
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A. |
0.85 × 500n |
B. |
500 × 0.85n |
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C. |
425 × 0.85n |
D. |
0.85n |
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Hint |
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16. |
Which curve represents exponential decay? |
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 |
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A. |
curve d |
B. |
curve c |
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C. |
curve a |
D. |
curve b |
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Hint |
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17. |
Find a solution to the equation using backtracking.
 |
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A. |
c = 8 |
B. |
c = –14 |
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C. |
c = –1 |
D. |
c = 2 |
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Hint |
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18. |
A ball is launched straight up from ground level modeling the equation h = 52t – 10t2, where h stands for height in meters and t stands for time. On its way up, it reached a particular height at 1 second. On its way down, it again reached the same height. At approximately what time did it reach that height the second time? |
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A. |
5.2 seconds |
B. |
3.5 seconds |
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C. |
4.2 seconds |
D. |
2.0 seconds |
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Hint |
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19. |
What angle of rotation does the figure below have? |
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 |
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A. |
45° |
B. |
30° |
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C. |
40° |
D. |
35° |
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Hint |
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20. |
Rule: (x, y)  (x – 6, y + 1). Find the correct translation. |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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