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1. |
Solve |t - 16| = 20. |
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A. |
{-4, 36} |
B. |
{-4, -36} |
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C. |
{4, -36} |
D. |
{4, 36} |
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Hint |
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2. |
Solve 2(y - 9) < 6. |
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A. |
{y | y > 12} |
B. |
{y | y < 12} |
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C. |
{y | y > -6} |
D. |
{y | y < 6} |
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Hint |
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3. |
Determine which equation represents a function. |
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A. |
x = 4 |
B. |
y = -2x + 1 |
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C. |
x = y2 - 1 |
D. |
 |
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Hint |
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4. |
A best-fit line is drawn on a scatter plot showing the average daily temperature and the number of people at a public swimming pool. The slope of the line would probably be ________ |
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A. |
zero. |
B. |
positive. |
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C. |
undefined. |
D. |
negative. |
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Hint |
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5. |
If f(x) = [2x - 1], find f(5.4). |
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A. |
9 |
B. |
8 |
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C. |
9.8 |
D. |
10 |
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Hint |
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6. |
When two lines have different slopes, the graphs of the equations are _________ |
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A. |
intersecting lines. |
B. |
parallel lines. |
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C. |
the same line. |
D. |
horizontal lines. |
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Hint |
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7. |
The solution of a system of three linear equations in three variables, x, y, and z, is called a(n) ____ (x, y, z). |
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A. |
ordered triple |
B. |
sum |
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C. |
integer |
D. |
ordered pair |
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Hint |
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8. |
A(n) _____ is a transformation that occurs when a figure is moved from one location to another. |
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A. |
addition |
B. |
enlargement |
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C. |
translation |
D. |
dilation |
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Hint |
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9. |
Triangle PQR with vertices P(-8, 9), Q(-3, -1), and R(2, 5) is translated so that P' is at (-12, 0). Find the translation matrix. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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10. |
Write the matrix equation  as a system of linear equations. |
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A. |
-2s + t = 12
5s + 8t = 7 |
B. |
-2s + t = 7
5s + 8t = 12 |
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C. |
-2s = 7
5t = 12 |
D. |
-2s + 5t = 7
s + 8t = 12 |
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Hint |
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11. |
Express 45,280,000 in scientific notation. |
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A. |
4.528 × 10-7 |
B. |
4.528 × 107 |
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C. |
4.528 × 106 |
D. |
45.28 × 106 |
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Hint |
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12. |
Simplify  |
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A. |
 |
B. |
k17 |
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C. |
k-3 |
D. |
k3 |
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Hint |
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13. |
Simplify (-3a5b3)4. |
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A. |
-12a20b12 |
B. |
-81a9b12 |
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C. |
81a20b12 |
D. |
-12a9b7 |
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Hint |
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14. |
Find (c2 + 2c - 6)(c + 5). |
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A. |
c3 + 7c2 + 4c - 30 |
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B. |
c3 + 2c2 + 5 |
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C. |
c3 + 2c2 - 6c - 30 |
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D. |
c3 + 2c2 - 30 |
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Hint |
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15. |
Simplify  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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16. |
Find the slope of the line below. |
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 |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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17. |
Which of the following is true concerning matrix multiplication of three matrices A, B, and C? |
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A. |
AB = BA for no cases |
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B. |
C(A + B) = CA + CB |
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C. |
(A + B)C = CA + CB |
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D. |
AB = BA for all cases |
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Hint |
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18. |
Solve the system –2x – 4y = 7, 3x + 5y = 9. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
(71, –39) |
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Hint |
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19. |
Simplify (7x2 + 2x – 3) – (2x2 – 11x + 4) |
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A. |
 |
B. |
5x2 + 13x – 7 |
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C. |
 |
D. |
 |
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Hint |
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20. |
Factor 4x2 – 5x – 6. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
(4x + 3)(x – 2) |
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Hint |
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