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1. |
Given f(x) = x2 + 1 and g(x) = 2x - 1, find (f - g)(x). |
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A. |
x2 - 2x - 1 |
B. |
x2 - 2x + 2 |
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C. |
x2 - 2x + 1 |
D. |
x2 + 2x |
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Hint |
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2. |
Find  (x) if f(x) = 3x2 + 1 and g(x) = 2x + 3. |
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A. |
6x2 + 5 |
B. |
12x2 - 36x + 28 |
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C. |
6x2 - 5 |
D. |
12x2 + 36x + 28 |
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Hint |
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3. |
Use a graphing calculator to find the equation of the regression line. |
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A. |
y = 12x - 23,947 |
B. |
y = 2x - 25 |
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C. |
y = x - 576 |
D. |
y = 23x - 21,000 |
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Hint |
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4. |
The math scores, x, and chemistry scores, y, for six students are given in the table. Use a graphing calculator to find the Pearson product-moment correlation. |
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A. |
about 0.71 |
B. |
about 0.74 |
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C. |
about 0.68 |
D. |
about 0.65 |
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Hint |
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5. |
Which is the graph of g(x) = |6 - |2x||? |
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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. |
The compound inequality 300 < x + y < 1200 and x = 2y is shown in the graph below. List the possibilities of Bobcats and Lions produced to meet the imposed conditions. |
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A. |
All points on the segment of the line x = 2y whose endpoints are (200, 100) and (800, 400) and whose coordinates are integers. |
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B. |
All points on the segment of the line x = 2y whose endpoints are (100, 200) and (400, 800) and whose coordinates are integers. |
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C. |
All points on the segment of the line 2x = 2y whose endpoints are (200, 100) and (800, 400) and whose coordinates are integers. |
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D. |
All points on the segment of the line 2x = y whose endpoints are (100, 200) and (400, 800) and whose coordinates are integers. |
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Hint |
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7. |
State the domain and range of the relation. |
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A. |
The domain and the range include all real numbers. |
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B. |
The domain includes negative real numbers. The range includes all real numbers. |
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C. |
The domain includes all real numbers. The range includes all positive real numbers. |
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D. |
The domain includes just positive real numbers. The range includes all real numbers. |
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Hint |
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8. |
Find f(2b2) for f(x) = x2 – 4x |
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A. |
-4b2 |
B. |
4b2 - 8b8 |
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C. |
4b4 - 8b2 |
D. |
2b4 - 8b2 |
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Hint |
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9. |
Find the zero of f(x) = 2x - 3, then graph the function. |
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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. |
Find the x- and y-intercepts of the equation:  |
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A. |
x-intercept –5; y-intercept 2 |
B. |
x-intercept 5; y-intercept -2 |
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C. |
x-intercept –2; y intercept 5 |
D. |
x-intercept 2; y-intercept 5 |
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Hint |
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11. |
Find a linear equation that can be used as a model for the data shown. |
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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. |
Write a linear equation to represent the cost y of a long distance calling plan that charges $5.99 plus $0.07 per minute for x number of minutes. |
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A. |
y = x + 5.99 |
B. |
y = 0.07x + 5.99 |
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C. |
y = x - 5.99 |
D. |
y = 5.99x + 0.07 |
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Hint |
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13. |
Determine whether 3x - 5y + 1 = 0 and 6x - 10y + 2 = 0 are parallel, coinciding, or neither. |
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A. |
all are correct |
B. |
parallel |
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C. |
coinciding |
D. |
perpendicular |
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Hint |
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14. |
Determine the equation of the perpendicular bisector of the line segment with endpoints (1,5) and (-6, 3). |
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A. |
14x + 4y + 19 = 0 |
B. |
2x + 7y - 23 = 0 |
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C. |
2x + 7y + 23 = 0 |
D. |
14x + 4y - 19 = 0 |
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Hint |
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15. |
Which of the following graphs represents the function: 
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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. |
Which is the graph of the inequality 2x + y + 3 >0? |
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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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