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1. |
Which graph represents the solution to x + 4 > -2? |
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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. |
1.728 × 103 |
D. |
0.1728 × 106 |
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Hint |
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3. |
Solve the equation x2 = 0.81. |
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A. |
x = -0.9 only |
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B. |
x = 0.9 or x = -0.9 |
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C. |
none of these is correct |
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D. |
x = 0.9 only |
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Hint |
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4. |
Express  in simplest form. |
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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. |
Simplify 2x2 + 5x2 + 7x. |
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A. |
14x2 |
B. |
14x |
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C. |
7x2 + 7x |
D. |
2x2 + 12x |
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Hint |
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6. |
Find the equation that has direct variation. |
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A. |
y = 0.8x + 9 |
B. |
y = 4x |
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C. |
y = 5x + 1.3 |
D. |
y = –3x – 1 |
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Hint |
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7. |
Pam's mother gives Pam $20 each week for lunch to be bought at the school cafeteria. Lunches cost $4 per day. Draw a graph showing the amount Pam has left decreasing very slowly. Suppose you graph the time in days on the horizontal axis and the amount Pam has left on the vertical axis. |
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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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8. |
What is the equation of a line that has a slope of 4 and passes through (6, 3)? |
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A. |
y = 4x – 21 |
B. |
y = 4x – 27 |
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C. |
y = 4x – 3 |
D. |
y = 4x – 7 |
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Hint |
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9. |
Which three points are collinear? |
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A. |
(3, –1), (2, 5), (2, –3) |
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B. |
(–5, 2), (1, 1), (4, 4) |
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C. |
(–4, 4), (0, –4), (–1, –2) |
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D. |
(1, 2), (–3, –2), (–2, –4) |
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Hint |
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10. |
Write the equation in slope-intercept form.
–6x = –10 – 2y |
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A. |
y + 8 = 3(x + 1) |
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B. |
y = 3x – 5 |
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C. |
y = 3x + 8 |
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D. |
–6x + 2y + 10 = 0 |
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Hint |
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11. |
Find the graph of y = x2. |
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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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12. |
Which way does the graph of y = –2x2 open? |
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A. |
down |
B. |
left |
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C. |
up |
D. |
right |
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Hint |
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13. |
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. |
1 m |
B. |
3.78 m |
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C. |
18.8 m |
D. |
2.13 m |
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Hint |
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14. |
What is the reciprocal 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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15. |
What type of relationship does the equation have if its first differences are constant? |
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A. |
quadratic |
B. |
constant |
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C. |
cubic |
D. |
linear |
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Hint |
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16. |
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. |
$12,400 |
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C. |
$11,160 |
D. |
$15,309 |
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Hint |
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17. |
Select the figure that is a reflection. |
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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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18. |
Translate the figure using the given vector. |
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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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19. |
Use the projection method to scale this polygon by a factor 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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20. |
Solve the equation. |
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A. |
x = 2 |
B. |
x = –3 |
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C. |
x = 3 |
D. |
x = –2 |
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Hint |
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