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1. |
Describe the graph. |
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A. |
relation and function |
B. |
neither a relation nor a function |
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C. |
relation but not function |
D. |
not a relation but a function |
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Hint |
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2. |
State the domain of (x) for f(x) = and g(x) =  |
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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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3. |
The population of Abnerville was 12,500 people in 1950. In 2000, the population was 250,000. Find the average rate of increase in the population over the 50 year period. |
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A. |
47.5 or about 48 people per year |
B. |
47,500 people per year |
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C. |
4750 people per year |
D. |
475 people per year |
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Hint |
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4. |
Find the zero of the function f(x) = -8x + 4. |
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A. |
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B. |
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C. |
-2 |
D. |
2 |
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Hint |
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5. |
Jane is opening a home-based business. She determined that she will need $4500 to buy a computer and supplies to start. She expects expenses for each following month to be $800. Write an equation that models the total expense y after x months. |
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A. |
y = 800x - 4500 |
B. |
y = 4500x - 800 |
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C. |
y = 4500x + 800 |
D. |
y = 800x + 4500 |
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Hint |
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6. |
Determine whether the graphs of the pair of equations 2x + 3y = 6 and 4x + 6y = 5 are parallel, coinciding, or neither. |
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A. |
neither |
B. |
parallel |
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C. |
coinciding |
D. |
all are correct |
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Hint |
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7. |
Determine the equation of the perpendicular bisector of the line segment with endpoints S(2, 6) and T(10, -4). |
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A. |
5x + 4y + 19 = 0 |
B. |
4x - 5y + 19 = 0 |
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C. |
4x - 5y - 19 = 0 |
D. |
5x - 4y - 19 = 0 |
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Hint |
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8. |
Which is the graph of the inequality x + 2y - 2 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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9. |
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 (100, 200) and (400, 800) and whose coordinates are integers. |
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B. |
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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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 x = 2y whose endpoints are (200, 100) and (800, 400) and whose coordinates are integers. |
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Hint |
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10. |
State the domain and range of the relation. Then state whether the relation is a function.{(2,-1), (-2,4), (2,5), (3,6)} |
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A. |
Domain {-2,2,3} Range {-1,4,5,6}The relation is not a function. |
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B. |
Domain {-1,4,5,6}Range {-2,2,3} The relation is not a function. |
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C. |
Domain {-2,2,3} Range {-1,4,5,6} The relation is a function. |
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D. |
Domain {-1,4,5,6}Range {-2,2,3}The relation is a function. |
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Hint |
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11. |
Find the domain of f(g(x)) given f(x) = , and g(x) = x-1 |
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A. |
all real numbers |
B. |
x 1,-1 |
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C. |
x 1 |
D. |
x 0, 1, -1 |
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Hint |
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12. |
Write an equation of the line that passes through the points (-2, 4) and (6, -4). |
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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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13. |
Graph the data on a scatter plot. |
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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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14. |
Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope. |
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A. |
Paul's test scores improve an average of 5 points with each test. |
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B. |
Paul's test scores are neither increasing nor decreasing. |
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C. |
Paul's test scores improve an average of 3 points with each test. |
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D. |
Paul's test scores improve an average of 15 points with each test. |
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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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D. |
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Hint |
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16. |
A bank charges a $10 fee if the account balance is less than $200. If the balance is in between $200 and $500 there is a $5 fee. If at least $500 is in the account, there is no fee. What type of function best represents this situation? |
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A. |
greatest integer function |
B. |
absolute value function |
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C. |
step function |
D. |
piecewise function |
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Hint |
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