Mr. Elliot needs to drain his above ground pool before the winter. The graph below represents the relationship between the number of gallons of water remaining in the pool and the number of hours that the pool has drained. Pool Water Level 11520 10080 M40 720 5760 2880 1440 10 Time (in hours) a. Write a function that models the situation above. b. What is the rate of change? What does it represent in the context of the problem? c. What is the x-intercept? What does it represent in the context of the problem? Water (in gallons)

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter1: Functions
Section1.4: Functions Given By Words
Problem 13E
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EX.1
Mr. Elliot needs to drain his above ground pool before the winter. The graph below represents the
relationship between the number of gallons of water remaining in the pool and the number of hours
that the pool has drained.
Pool Water Level
11520
10080
720
5760
280
1440
Time (in hours)
a. Write a function that models the situation above.
b. What is the rate of change? What does it represent in the context of the problem?
c. What is the x-intercept? What does it represent in the context of the problem?
d. What is the y-intercept? What does it represent in the context of the problem?
Over which interval, if any, is the function positive? What does it represent in the context of the
problem?
e.
Over which interval, if any, is the function negative? What does it represent in the context of the
problem?
f.
Water (in gallons)
Transcribed Image Text:Mr. Elliot needs to drain his above ground pool before the winter. The graph below represents the relationship between the number of gallons of water remaining in the pool and the number of hours that the pool has drained. Pool Water Level 11520 10080 720 5760 280 1440 Time (in hours) a. Write a function that models the situation above. b. What is the rate of change? What does it represent in the context of the problem? c. What is the x-intercept? What does it represent in the context of the problem? d. What is the y-intercept? What does it represent in the context of the problem? Over which interval, if any, is the function positive? What does it represent in the context of the problem? e. Over which interval, if any, is the function negative? What does it represent in the context of the problem? f. Water (in gallons)
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