large tank contains 120 gallons of pure water. Brine containing 1.5 lbs. of salt per gallon of water enters the tank at a rate of 4 gal/min. The mixture leaves the tank at a slower rate of 2 gal/min. Find an expression for the amount of salt in the tank at time t.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter3: Functions
Section3.3: Rates Of Change And Behavior Of Graphs
Problem 45SE: A driver of a car stopped at a gas station to fill up his gas tank. He looked at his watch, and the...
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A large tank contains 120 gallons of pure water. Brine containing 1.5 lbs. of salt per gallon of water enters the tank at a rate of 4 gal/min. The mixture leaves the tank at a slower rate of 2 gal/min. Find an expression for the amount of salt in the tank at time t.
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