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1. |
State an absolute value inequality for ''all numbers less than or equal to 8, and greater than or equal to -8.'' |
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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. |
Which statement is true about the graph shown below? |
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A. |
The relation is a function. |
B. |
The range is {-3, -2, 0, 1}. |
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C. |
The domain is {-3, 2, 4}. |
D. |
The relation is not a function. |
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Hint |
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3. |
Selena has 31 days to complete her quilt for the county fair. The blue squares in the quilt can be sewn at a rate of 4 squares per day, and the white squares at a rate of 7 squares per day. The quilt can have up to 96 squares total. The blue fabric b costs about $0.80 per square and the white fabric w costs about $1.20 per square. Selena wants to keep costs at a minimum. Write an inequality that expresses the total number of squares to be sewn. |
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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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4. |
Find the determinant of  |
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A. |
-11 |
B. |
-16 |
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C. |
-21 |
D. |
0 |
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Hint |
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5. |
Find the inverse 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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6. |
What is the first step in solving the matrix equation
 |
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A. |
Divide each side of the matrix equation by  |
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B. |
Multiply each side of the matrix equation by the identity matrix. |
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C. |
Find the inverse of |
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D. |
Multiply each side of the matrix equation by |
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Hint |
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7. |
Simplify (4r - s) - (r + 2s) + (3r - s). |
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A. |
6r - 4s |
B. |
3r - 2s |
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C. |
6r - 3s |
D. |
8r |
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Hint |
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8. |
Factor 6x3y + 15x2y2 - 3x4y. |
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A. |
3x2y(2x+ 5y - x2) |
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B. |
x2y(6x + 15y - 3x2) |
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C. |
xy(6x2 + 15xy - 3x3) |
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D. |
3xy(2x2 + 5xy - x3) |
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Hint |
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9. |
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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10. |
Solve  |
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A. |
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B. |
no solution |
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C. |
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D. |
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Hint |
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11. |
Simplify  |
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A. |
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B. |
2i |
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C. |
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D. |
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Hint |
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12. |
Simplify -8i · 6i. |
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A. |
-48 |
B. |
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C. |
48-1 |
D. |
48 |
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Hint |
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13. |
Evaluate z – (2yz + y) · y if y = -3 and z = 2. |
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A. |
47 |
B. |
9 |
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C. |
-43 |
D. |
23 |
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Hint |
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14. |
The formula for the perimeter of a rectangle is  , where  is the length of the rectangle and w is the width. If a rectangle is 17 ft long and 8 ft wide, what is its perimeter? |
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A. |
25 ft |
B. |
68 ft |
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C. |
42 ft |
D. |
50 ft |
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Hint |
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15. |
Write the equation of the line through (5, -3) and (-2, -8) in slope-intercept 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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16. |
What is the slope of a constant function? |
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A. |
c, where f (x) = c |
B. |
-1 |
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C. |
0 |
D. |
1 |
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Hint |
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17. |
Solve  |
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A. |
(–1, 2) |
B. |
(–2, 1) |
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C. |
(2, –1) |
D. |
(1, –2) |
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Hint |
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18. |
Determine whether the pair of matrices  are inverses. |
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A. |
yes, because each entry in the second matrix is the reciprocal of its corresponding entry in the first matrix. |
B. |
no, because A · B  I |
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C. |
yes, because A · B = I. |
D. |
no, because fractions cannot be a part of an inverse |
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Hint |
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19. |
Determine whether the expression 5x3y3 – x2y2 is a polynomial. |
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A. |
No, because there are two variables. |
B. |
No, because there are two terms. |
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C. |
Cannot be determined from given information. |
D. |
Yes. |
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Hint |
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20. |
Solve  |
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A. |
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B. |
no real solution. |
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C. |
18 |
D. |
36 |
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Hint |
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