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1. |
Write in standard form where A, B, and C are integers whose greatest common factor is 1. |
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A. |
3x + 8y = 16 |
B. |
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C. |
3x - 8y = 16 |
D. |
3x - 8y = 2 |
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Hint |
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2. |
The temperature f(x) of water in a lake in degrees Fahrenheit is estimated by the function shown below, where x is the depth in feet of the water. What would be the temperature of water 30 feet below the surface? |
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A. |
111°F |
B. |
33°F |
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C. |
63°F |
D. |
71.25°F |
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Hint |
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3. |
Identify h(x) = [x] + 4. |
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A. |
greatest integer function |
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B. |
constant function |
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C. |
direct variation function |
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D. |
absolute value function |
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Hint |
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4. |
Choose the line whose slope is undefined. |
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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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5. |
Find the domain of the relation shown in the graph. |
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A. |
{-3, -2, -1, 0, 1, 2, 3, 5} |
B. |
{-2, -1, 1, 2, 3, 5} |
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C. |
{0, 1, 2, 3} |
D. |
{-3, -2, -1, 0, 1, 3} |
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Hint |
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6. |
When the equation is written in standard form, what is the value of B? |
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A. |
-25 |
B. |
25 |
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C. |
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D. |
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Hint |
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7. |
Graph the line passing through the point (2, -5) with a slope of –2. |
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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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8. |
What is the slope of the line with equation  |
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A. |
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B. |
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C. |
7 |
D. |
-7 |
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Hint |
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9. |
A phone company charges for service as follows: they charge a certain amount for a visit, and then they charge a certain amount per hour after that. If a three-hour service visit costs $220, and a job that takes an hour and a half costs $145, how much is the cost of a visit before the amount of time spent is factored in? |
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A. |
$25 |
B. |
$50 |
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C. |
$217 |
D. |
$70 |
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Hint |
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10. |
The table shows the average heights (in centimeters) of females ages 1-14. If this trend continues, about how tall will an average fifteen-year-old female be? |
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A. |
163.7 cm |
B. |
156.9 cm |
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C. |
160.3 cm |
D. |
168.5 cm |
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Hint |
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11. |
When finding the equation for a line of fit for a scatter plot, you should use __________. |
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A. |
the first and last points on the plot, with respect to the horizontal |
B. |
all of the points on the plot |
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C. |
the point most characteristic of the scatter plot |
D. |
two points that you think represent the data well |
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Hint |
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12. |
Suppose a plant grows one inch every year. If x is how old the plant is (in years), and f (x) is how tall the plant is (in inches), what type of function is f (x)? |
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A. |
absolute value function |
B. |
identity function |
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C. |
constant function |
D. |
step function |
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Hint |
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13. |
Which graph shows the inequality 5x – 2y 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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14. |
What is the inequality represented in the graph? |
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A. |
x + 2y 4 |
B. |
x + 2y > 4 |
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C. |
x + 2y 4 |
D. |
x + 2y > 4 |
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Hint |
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