Exam 22: Power Functions
Exam 1: Functions Given by Formulas38 Questions
Exam 2: Functions Given by TableChas13 Questions
Exam 3: Functions Given by Graphs38 Questions
Exam 4: Functions Given by Words26 Questions
Exam 5: Table and Trends34 Questions
Exam 6: Graphs37 Questions
Exam 7: Solving Linear Equations35 Questions
Exam 8: Solving Nonlinear Equations38 Questions
Exam 9: Inequalities39 Questions
Exam 10: Optimization36 Questions
Exam 11: The Geometry of Lines46 Questions
Exam 12: Linear Functions39 Questions
Exam 13: Modeling Data with Linear Functions8 Questions
Exam 14: Linear Regression5 Questions
Exam 15: Systems of Equations40 Questions
Exam 16: Exponential Growth and Decay41 Questions
Exam 17: Constant Percentage Change31 Questions
Exam 18: Modeling Exponential Data7 Questions
Exam 19: Modeling Nearly Exponential Data5 Questions
Exam 20: Logarithmic Functions41 Questions
Exam 21: Logistic Functions35 Questions
Exam 22: Power Functions41 Questions
Exam 23: Modeling Data with Power Functions4 Questions
Exam 24: Combining and Decomposing Functions36 Questions
Exam 25: Quadratic Functions24 Questions
Exam 26: Higher Degree Polynomials and Rational Functions27 Questions
Exam 27: Velocity49 Questions
Exam 28: Rates of Change for Other Functions40 Questions
Exam 29 Estimating Rates of Change27 Questions
Exam 30: Equations of Change Linear and Exponential Functions30 Questions
Exam 31: Equations of Change Graphical Solutions39 Questions
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The life expectancy of a star is a power function of its mass.The value of the power in this function is
.If the mass is increased by 43%, how is the life expectancy affected? Round your answer to two decimal places if necessary.

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(Multiple Choice)
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Correct Answer:
C
The length of skid marks when a car skids to a stop is a power function of the speed the car is traveling when brakes are applied.The value of the power in this function is
.If the skid mark length is multiplied by 2.19, how is the speed affected? Round your answer to two decimal places if necessary.

Free
(Multiple Choice)
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Correct Answer:
C
Let
.If y is increased by 32%, how is x affected? Express your answer in terms of a percent.Round your answer to two decimal places if necessary.

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(Multiple Choice)
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Correct Answer:
D
Let
.If x is decreased by 35%, how is y affected? Express your answer in terms of a percent.Round your answer to two decimal places if necessary.

(Multiple Choice)
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The weight of a certain type of fish is a power function of its length.It is observed that if the length is doubled, the weight increases by a factor of 2.93.What is the value of the power k for this power function? Round your answer to two decimal places if necessary.
(Multiple Choice)
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Let
.If x is multiplied by 1.48, how is y affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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Let
.If
when
, what is the value of c? Round your answer to two decimal places if necessary.



(Multiple Choice)
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The weight of a certain type of fish is a power function of its length.The value of the power in this function is
.If the length is doubled, how is the weight affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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(36)
Let
.If x is decreased by 5%, how is y affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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The length of skid marks when a car skids to a stop is a power function of the speed the car is traveling when brakes are applied.The value of the power in this function is
.If the skid length is doubled, how is the speed affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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The length of skid marks when a car skids to a stop is a power function of the speed the car is traveling when the brakes are applied.The value of the power in this function is
.If the speed is multiplied by 2.59, how is the skid mark length affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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The speed for certain animals is related to the stride length by a power function.The value of the power in this function is
.If the stride length is doubled, how is the speed affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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The speed for certain animals is related to the stride length by a power function.The value of the power in this function is
.If the speed is multiplied by 1.77, how is the stride length affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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Let
.If
when
, what is the value of c? Round your answer to two decimal places if necessary.



(Multiple Choice)
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If k is not zero, the graph of the power function
is concave up.

(True/False)
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Let
.If x is increased by 1.84%, how is y affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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The body surface area B of an 80-kilogram man depends on his height h measured in meters.The relationship is
. If the height is multiplied by 1.08, how is the body surface area affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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Let
.If y is multiplied by 2.05, how is x affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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The life expectancy of a star is a power function of its mass.The value of the power in this function is
.If the life expectancy is doubled, how is the mass affected? Round your answer to two decimal places if necessary.

(Multiple Choice)
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