Multiple Choice Identify the
choice that best completes the statement or answers the question.
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1.
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Find the positive and negative square roots of ![mc001-1.jpg](chapter_9_pre_test_files/mc001-1.jpg) , if possible.
Do not use a calculator.
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2.
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Find the positive and negative square roots of ![mc002-1.jpg](chapter_9_pre_test_files/mc002-1.jpg) , if possible.
Reduce the fraction, if needed. Do not use a calculator.
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3.
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Find the principal square root of ![mc003-1.jpg](chapter_9_pre_test_files/mc003-1.jpg) , if possible. Do not use a
calculator.
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4.
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Use a calculator to approximate ![mc004-1.jpg](chapter_9_pre_test_files/mc004-1.jpg) . Round your answer to three
decimal places.
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5.
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A stream of water moving at the rate of v feet per second can carry
particles of size ![mc005-1.jpg](chapter_9_pre_test_files/mc005-1.jpg) inches. Find the particle size (in inches)
that can be carried by a stream flowing at the rate of ![mc005-2.jpg](chapter_9_pre_test_files/mc005-2.jpg) foot per second. Round your
answer to two decimal places.
a. | inch | b. |
inch | c. | inch | d. |
inch | e. | inch |
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6.
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Use the formula ![mc006-1.jpg](chapter_9_pre_test_files/mc006-1.jpg) to find the length of the side s of a square
whose area is ![mc006-2.jpg](chapter_9_pre_test_files/mc006-2.jpg) square inches. Round your answer to two
decimal places.
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7.
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Complete the table. Round your answer to two decimal places.
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8.
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Simplify the radical ![mc008-1.jpg](chapter_9_pre_test_files/mc008-1.jpg) .
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9.
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Rationalize the denominator of the expression ![mc009-1.jpg](chapter_9_pre_test_files/mc009-1.jpg) and
simplify.
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10.
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Rationalize the denominator and simplify the expression ![mc010-1.jpg](chapter_9_pre_test_files/mc010-1.jpg) .
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11.
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Simplify the expression ![mc011-1.jpg](chapter_9_pre_test_files/mc011-1.jpg) .
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12.
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Simplify the expression ![mc012-1.jpg](chapter_9_pre_test_files/mc012-1.jpg) .
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13.
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Multiply and simplify the expression ![mc013-1.jpg](chapter_9_pre_test_files/mc013-1.jpg) .
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14.
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Rationalize the denominator of ![mc014-1.jpg](chapter_9_pre_test_files/mc014-1.jpg) and simplify.
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15.
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Rewrite ![mc015-1.jpg](chapter_9_pre_test_files/mc015-1.jpg) as a single fraction and rationalize the
denominator.
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16.
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Enter the number ![mc016-1.jpg](chapter_9_pre_test_files/mc016-1.jpg) in your calculator and repeatedly take the
square root. What number does the display appear to be approaching?
a. | ![mc016-2.jpg](chapter_9_pre_test_files/mc016-2.jpg) | b. | ![mc016-3.jpg](chapter_9_pre_test_files/mc016-3.jpg) | c. | ![mc016-4.jpg](chapter_9_pre_test_files/mc016-4.jpg) | d. | ![mc016-5.jpg](chapter_9_pre_test_files/mc016-5.jpg) | e. | The display is not approaching a
number. |
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17.
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Determine which value of x is a solution of ![mc017-1.jpg](chapter_9_pre_test_files/mc017-1.jpg) .
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18.
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Find the distance between ![mc018-1.jpg](chapter_9_pre_test_files/mc018-1.jpg) and ![mc018-2.jpg](chapter_9_pre_test_files/mc018-2.jpg) .
Round your answer to two decimal places.
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19.
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Use the equation for the velocity of a free-falling object ![mc019-1.jpg](chapter_9_pre_test_files/mc019-1.jpg)
where v is measured in feet per second, ![mc019-2.jpg](chapter_9_pre_test_files/mc019-2.jpg) feet per second squared, and
h is height in feet to estimate the height from which the object was dropped if it strikes the
ground with a velocity of ![mc019-3.jpg](chapter_9_pre_test_files/mc019-3.jpg) feet per second. Round your answer to two
decimal places.
a. | feet | b. |
feet | c. | feet | d. |
feet | e. | feet |
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20.
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The demand equation for a video game is ![mc020-1.jpg](chapter_9_pre_test_files/mc020-1.jpg) where
x is the number of units demanded per day and p is the price per game. Find the demand
when the price is set at ![mc020-2.jpg](chapter_9_pre_test_files/mc020-2.jpg) . Round your answer to the nearest
integer.
a. | units per day | b. |
units per day | c. | units per day | d. |
units per day | e. | units per day |
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