Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1
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A poll estimates that 55% of likely voters are in favor of additional
restrictions on teenage drivers. The poll has a margin of error of plus or minus 3%. Write and solve
an absolute value equation to find the minimum and maximum percent of voters that actually support
the restrictions.
A | | x – 55 | = 3; minimum = 52%, maximum = 58% | B | | x – 55
| = 3; minimum = 55%, maximum = 58% | C | | x – 3 | = 55; minimum =
55%, maximum = 58% | D | | x – 3 | = 55; minimum =
52%, maximum = 58% |
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2
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Solve the inequality  and graph the solutions. Then write the
solutions as a compound inequality.
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3
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Safety goggles function best at room temperature, or 75  F. A pair of
special safety goggles can function at temperatures that differ from this value by at most 41.3  F.
Write and solve an absolute-value inequality to find the range of acceptable temperatures. Graph the
solutions.
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4
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Solve  . A | x = 18 or x = 0 | C | x = 18 | B | x =
27 | D | x = 27 or
x = –9 |
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5
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Solve the inequality.  A | The solution set is  . | C | The solution set is  . | B | The solution set is  OR  . | D | The solution
set is all real numbers. |
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6
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Solve and graph the solutions of  .
Write the solutions as a compound inequality. A | –9 < x < 21
 | B | x < –
15 OR x > 15
 | C | x > 21
 | D | x < –
9 OR x > 21
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7
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Solve the inequality  and graph the solutions. Then write the
solutions as a compound inequality.
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8
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Solve  . A | x =  | C | No solution | B | x =  | D | x =  |
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