The water level in a glass decreases 0.4 cm each hour due to evaporation. At the beginning of the experiment, the water level is 12.6 cm. Let a represent time, in hours, elapsed since the beginning of the experiment and let y represent the water level, in centimeters. Part A Construct a linear function, using a and y from above, that determines the water level at a given time, in hours, after the experiment begins. Part B How many hours does it take for all of the water to evaporate? hours

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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The water level in a glass decreases 0.4 cm each hour due to evaporation. At the beginning of the experiment, the
water level is 12.6 cm.
Let a represent time, in hours, elapsed since the beginning of the experiment and let y represent the water level, in
centimeters.
Part A
Construct a linear function, using z and y from above, that determines the water level at a given time, in hours, after
the experiment begins.
Part B
How many hours does it take for all of the water to evaporate?
hours
Transcribed Image Text:The water level in a glass decreases 0.4 cm each hour due to evaporation. At the beginning of the experiment, the water level is 12.6 cm. Let a represent time, in hours, elapsed since the beginning of the experiment and let y represent the water level, in centimeters. Part A Construct a linear function, using z and y from above, that determines the water level at a given time, in hours, after the experiment begins. Part B How many hours does it take for all of the water to evaporate? hours
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