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1. |
If y varies directly as x and y = 6 when x = 2, find y when x = 5. |
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A. |
 |
B. |
6 |
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C. |
15 |
D. |
2.4 |
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Hint |
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2. |
If p varies inversely as q and p = -8 when q = 2, find p when q = -4. |
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A. |
4 |
B. |
-4 |
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C. |
16 |
D. |
-16 |
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Hint |
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3. |
Simplify  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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4. |
Simplify . |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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5. |
Assuming that , determine whether is sometimes, always, or never true. |
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A. |
cannot be determined from given information |
B. |
always |
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C. |
sometimes |
D. |
never |
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Hint |
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6. |
Find the slope of the line that passes through A and B . |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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7. |
The graph of has a hole at which point? |
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A. |
(-4, -8) |
B. |
(4, 8) |
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C. |
(-4, 8) |
D. |
(4, -8) |
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Hint |
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8. |
In a certain job, the function represents the amount of hours worked x in relation to the amount of stress f(x) felt by the workers. For what values of x does this graph have meaning? |
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A. |
for  |
B. |
for and x < 40 |
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C. |
for all values of x |
D. |
for and x > 40, because stress is a non-negative quantity |
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Hint |
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9. |
When will it be true that ? |
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A. |
only when x is not an integer |
B. |
never |
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C. |
only when x is an integer |
D. |
always |
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Hint |
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10. |
What type of function is the following? |
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A. |
quadratic |
B. |
rational |
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C. |
square root |
D. |
direct variation |
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Hint |
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11. |
Solve . |
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A. |
– < x <  |
B. |
x >  |
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C. |
x <  |
D. |
0 < x <  |
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Hint |
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12. |
Solve . |
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A. |
0 and 7 |
B. |
– |
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C. |
– and 7 |
D. |
7 |
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Hint |
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