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1. |
State the domain and range of the relation. |
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A. |
All real numbers are included in the domain and the range. |
B. |
3 is included in the domain, and 3 is included in the range. |
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C. |
3 is included in the domain, and all real numbers are included in the range. |
D. |
All real numbers are included in the domain, and 3 is included in the range. |
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Hint |
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2. |
Use a graphing calculator to find the equation of the regression line. |
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A. |
y = 2x - 25 |
B. |
y = 12x - 23,947 |
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C. |
y = x - 576 |
D. |
y = 23x - 21,000 |
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Hint |
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3. |
Solve the system of equations by substitution.
x = z
x - 2y + z = 6
2x + y - 2z = 1
What is the value of x + y + z? |
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A. |
9 |
B. |
10 |
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C. |
11 |
D. |
8 |
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Hint |
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4. |
Triangle ABC has vertices A(7, 2), B(3, -1), and C(1, 4). Find the image of the triangle after a reflection over the x-axis. |
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A. |
A'(7, -2), B'(-1, 3),
C'(-1, -4) |
B. |
A'(7, -2), B'(3, 1), C'(1, -4) |
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C. |
A'(-7, -2), B'(-3, 1),
C'(-1, -4) |
D. |
A'(2, 7), B'(-1, 3), C'(4, 1) |
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Hint |
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5. |
A triangle ABC has vertices A(3, -1), B(4, -2), and C(7, 1). Find the coordinates of the dilated triangle for a scale factor of 3. |
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A. |
A,/i>'(12, -6), B'(21, 3),
C'(-9, -3) |
B. |
A'(-3, 9), B'(-6, 12),
C'(3, 21) |
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C. |
A'(9, -3), B'(12, -6),
C'(21, 3) |
D. |
A'(21, 3), B'(12, -6),
C'(-9, -3) |
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Hint |
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6. |
The graph of y = -x2 + 1 is symmetric about __________. |
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A. |
the x-axis |
B. |
the y-axis |
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C. |
both the x-axis and
the y-axis |
D. |
neither the x-axis nor
the y-axis |
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Hint |
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7. |
Choose the graph of y < 2 - |x - 1|. |
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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. |
If y varies inversely as x and y = 12 when x = 7, find x when y = 2. |
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A. |
7 |
B. |
5 |
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C. |
10 |
D. |
42 |
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Hint |
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9. |
Suppose y varies directly as x and y = 13 when x = 7. Find the constant of variation and write an equation. |
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A. |
k =  and y = 13 · 7x |
B. |
k =  and y = x |
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C. |
k = and y = x |
D. |
k = and y = 13 · 7x |
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Hint |
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10. |
Solve  . |
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A. |
0 |
B. |
3 |
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C. |
1 |
D. |
2 |
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Hint |
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11. |
Find the area of  if a = 5.2, c = 13.6, and B = 46° 30'. |
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A. |
about 24.3 square units |
B. |
about 48.7 square units |
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C. |
about 51.3 square units |
D. |
about 25.6 square units |
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Hint |
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12. |
Complete the identity  = ________. |
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A. |
cot x |
B. |
tan x |
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C. |
cos x |
D. |
sin x |
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Hint |
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13. |
Solve sin2 x - sin x + 1 = cos2 x for 0  x < 2 . |
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A. |
0,  ,  , |
B. |
0, , |
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C. |
0, ,  , |
D. |
0,  , , |
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Hint |
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14. |
If rectangle ABCD has vertices A(0, 0), B(a, 0), and C(a, b), find the coordinates of D. |
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A. |
(a, 0) |
B. |
(0, 3) |
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C. |
(0, b) |
D. |
(0, -b) |
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Hint |
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15. |
If 6 + 8 + 10 + ··· + (4 + 2n) = n(n + 5), which statement verifies that Sn is valid for n = 1? |
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A. |
6 + 8 = 2(2 + 5); 14 = 14 |
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B. |
6 + 8 + 10 = 3(3 + 5); 24 = 24 |
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C. |
6 + 8 + 10 + 12 = 4(4 + 5); 36 = 36 |
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D. |
6 = 1(1 + 5); 6 = 6 |
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Hint |
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16. |
Francis guesses at all 6 true/false questions in a trivia game. What is the probability that he guesses correctly on at least 5 of the questions? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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17. |
Solve the system of 3 equations by substitution. x = 3y + 2z
2x + 3y + 2z = 3
-x + y - z = 6 |
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A. |
no solution |
B. |
(8, 4, -2) |
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C. |
infinite solutions |
D. |
(1, 3, -4) |
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Hint |
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18. |
Complete the identity  = _______. |
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A. |
sin x |
B. |
sec x |
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C. |
tan x |
D. |
-cos x |
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Hint |
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19. |
Solve  Round to the nearest tenth. |
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A. |
284.9 |
B. |
153.2 |
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C. |
37.2 |
D. |
25.0 |
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Hint |
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20. |
Find the next four terms in the arithmetic sequence 16, 4, -8, … |
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A. |
-2, -4, -8, -16 |
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B. |
16, -32, 64, -128 |
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C. |
-12, -16, -20, -24 |
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D. |
-20, -32, -44, -56 |
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Hint |
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