The surface temperature of a deep, spring-fed lake is 70°F. The lake temperature drops 2°F for each yard below the lake surface until a depth of 6 yards is reached. From 6 yards to 15 yards deep, the temperature is constant. From 15 yards down to the spring source, the temperature increases 3°F per foot until the spring source is reached at 20 yards below the surface. a. What is the temperature at 10 yards below the surface? b. What is the temperature at 50 feet below the surface? c. Write an expression for finding the lake temperature at the spring source.
The surface temperature of a deep, spring-fed lake is 70°F. The lake temperature drops 2°F for each yard below the lake surface until a depth of 6 yards is reached. From 6 yards to 15 yards deep, the temperature is constant. From 15 yards down to the spring source, the temperature increases 3°F per foot until the spring source is reached at 20 yards below the surface. a. What is the temperature at 10 yards below the surface? b. What is the temperature at 50 feet below the surface? c. Write an expression for finding the lake temperature at the spring source.
Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
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Chapter8: Rational Expressions And Equations
Section8.9: Use Direct And Inverse Variation
Problem 503E: The length a spring stretches varies directly with a weight placed at the end of the spring. When...
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![The surface temperature of a deep, spring-fed lake is 70°F. The lake
temperature drops 2°F for each yard below the lake surface until a
depth of 6 yards is reached. From 6 yards to 15 yards deep, the
temperature is constant. From 15 yards down to the spring source, the
temperature increases 3°F per foot until the spring source is reached
at 20 yards below the surface.
a. What is the temperature at 10 yards below the surface?
b. What is the temperature at 50 feet below the surface?
c. Write an expression for finding the lake temperature at the spring
source.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F852646ff-0e09-40c7-ad2b-d6fe1ae22ee8%2Fae87088d-6ad7-4c31-a537-0e9fd00c204f%2Ftnuctap.jpeg&w=3840&q=75)
Transcribed Image Text:The surface temperature of a deep, spring-fed lake is 70°F. The lake
temperature drops 2°F for each yard below the lake surface until a
depth of 6 yards is reached. From 6 yards to 15 yards deep, the
temperature is constant. From 15 yards down to the spring source, the
temperature increases 3°F per foot until the spring source is reached
at 20 yards below the surface.
a. What is the temperature at 10 yards below the surface?
b. What is the temperature at 50 feet below the surface?
c. Write an expression for finding the lake temperature at the spring
source.
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