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1. |
Simplify  Assume the denominator is not equal to zero. |
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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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2. |
Evaluate (3.2 × 10-5)(5.4 × 109). Express the result in scientific notation. |
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A. |
17.28 × 104 |
B. |
1.728 × 105 |
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C. |
0.1728 × 106 |
D. |
1.728 × 103 |
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Hint |
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3. |
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. |
180.9 meters |
B. |
130.4 meters |
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C. |
221.6 meters |
D. |
252.5 meters |
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Hint |
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4. |
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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5. |
Simplify  . |
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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. |
Which characteristic describes a graph that is linear and has direct variation. |
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A. |
The graph does not pass through (0, 0). |
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B. |
The equation has the form y = mx + b. |
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C. |
The equation has the form y = mx. |
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D. |
Variables x and y are not proportional. |
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Hint |
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7. |
What is the equation of a line that has a slope of –1 and passes through (–2, 0)? |
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A. |
y = –x + 2 |
B. |
y = –x – 2 |
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C. |
y = –2x + 1 |
D. |
y = –x – 1 |
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Hint |
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8. |
Which line is parallel to the line listed below?
 |
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A. |
y = 2x - 5 |
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B. |
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C. |
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D. |
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Hint |
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9. |
Which way does the graph of y = –2x2 open? |
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A. |
right |
B. |
up |
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C. |
left |
D. |
down |
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Hint |
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10. |
How many diagonals does a 25-sided polygon have? |
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A. |
550 |
B. |
275 |
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C. |
25 |
D. |
300 |
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Hint |
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11. |
Which equation is in the same family as y = x2? |
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A. |
y = x2 – 3 |
B. |
y = 2x2 – 3 |
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C. |
y = 2x – 3 |
D. |
y = x3 – 3 |
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Hint |
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12. |
Two friends are playing catch with a baseball. The ball's flight can be modeled by the equation
y = 1 + 0.6x – 0.08x2, in meters. What is the height of the ball at its highest point? |
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A. |
3.78 m |
B. |
18.8 m |
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C. |
1 m |
D. |
2.13 m |
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Hint |
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13. |
Find which equation does not represent a reciprocal relationship. |
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A. |
–6 = ef |
B. |
ab = 3 |
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C. |
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D. |
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Hint |
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14. |
Which differences are constant in a cubic equation? |
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A. |
second |
B. |
third |
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C. |
first |
D. |
fourth |
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Hint |
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15. |
Tell whether the statement is sometimes true, always true, or never true for positive values of n. If it is sometimes true, state for what value it is true.
4n = 6,561. |
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A. |
sometimes true, n = 7 |
B. |
always true |
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C. |
never true |
D. |
sometimes true, n = 8 |
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Hint |
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16. |
Use the following table to find the population of bacteria in hour n. |
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A. |
180,000n |
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B. |
30,0006n |
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C. |
6 × 30,000 n |
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D. |
30,000 × 66 |
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Hint |
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17. |
Identify the growth factor in the equation p = 682,363 × 1.08n where p is the population and n is the number of years after 2001. |
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A. |
n |
B. |
p |
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C. |
682,363 |
D. |
1.08 |
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Hint |
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18. |
Suppose your parents buy a new car for $21,000. What will the value of the car be in 5 years if the car depreciates by 10% each year.? |
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A. |
$10,044 |
B. |
$15,309 |
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C. |
$12,400 |
D. |
$11,160 |
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Hint |
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19. |
Use the following table to find the amount of medicine remaining in the bloodstream after n hours. |
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A. |
0.85n |
B. |
0.85 × 500n |
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C. |
500 × 0.85n |
D. |
425 × 0.85n |
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Hint |
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20. |
Evaluate. |
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A. |
–3 |
B. |
2 |
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C. |
–2 |
D. |
3 |
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Hint |
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