Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter8: Functions
Section8.7: Direct And Inverse Variation
Problem 36PS
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Question
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4)If y varies inversely with the square of x, and
y=12
when
x=3,
find y when
x=0.4.
5)
Last summer the price of gasoline changed frequently. One station owner noticed that the number of gallons he sold each day seemed to vary inversely with the price per gallon. If he sold
2800
gallons when the price was
$4.40,
how many gallons could he expect to sell if the price fell to
$4.10?
6)Every year on Earth Day, a group of volunteers pick up garbage at Hidden Falls Park. The time it takes to clean the beach varies inversely with the number of people picking up garbage. Last year,
36
volunteers took
6
hours to clean the park. If
68
volunteers come to pick up garbage this year, how long will it take to clean the park?Expert Solution
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