tank contains 50-liters of brine in which 20 grams of salt is dissolved. Pure water is being pumped to the tank at a rate of 5 liters/min., the solution is continuously stirred and the well-mixed solution pumped out at 4 liters/min. Which of the following initial-value problems must be solved to find the mount of salt x= x(t) in the tank at time t? dx 2x x(0) = 20 25 A dt dx ; x(0)=20 B dt 50 +t dx 4x x(0) = 20 dt 50 +t' dx = 5- dt D x(0) =20 50 +t

tank contains 50-liters of brine in which 20 grams of salt is dissolved. Pure water is being pumped to the tank at a rate of 5 liters/min., the solution is continuously stirred and the well-mixed solution pumped out at 4 liters/min. Which of the following initial-value problems must be solved to find the mount of salt x= x(t) in the tank at time t? dx 2x x(0) = 20 25 A dt dx ; x(0)=20 B dt 50 +t dx 4x x(0) = 20 dt 50 +t' dx = 5- dt D x(0) =20 50 +t

Calculus: Early Transcendentals

8th Edition

ISBN:9781285741550

Author:James Stewart

Publisher:James Stewart

Chapter1: Functions And Models

Section: Chapter Questions

Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...

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Question

A tank contains 50-liters of brine in which 20 grams of salt is dissolved. Pure water is being pumped into the tank at a rate of 5 liters/min., the solution is continuously stirred and the well-mixed solution is pumped out at 4 liters/min. Which of the following initial-value problems must be solved to find the amount of salt x= x(t) in the tank at time t?