22.5 A tank initially holds 80 gal of a brine solution containing 1/8 lb of salt per gallon. At t=0, another brine solution containing 1 lb of salt per gallon of solution is poured into the tank at the rate of 4 gal/min, while well-stirred mixture leaves the tank at the rate of 8 gal/min. Find the amount of salt at 1-10 min. 1 decimal place (no units)

22.5 A tank initially holds 80 gal of a brine solution containing 1/8 lb of salt per gallon. At t=0, another brine solution containing 1 lb of salt per gallon of solution is poured into the tank at the rate of 4 gal/min, while well-stirred mixture leaves the tank at the rate of 8 gal/min. Find the amount of salt at 1-10 min. 1 decimal place (no units)

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter5: Inverse, Exponential, And Logarithmic Functions

Section: Chapter Questions

Problem 15T

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Suppose that the initial mass of radioactive substance is m0 and the half-life of the substance is h. Let m(t) be the mass remaining at time t. a What is meant by the half-life h? b Write a formula for m(t) in terms of the half-life h. c Write a formula for the relative decay rate r in terms of the half-life h. d Write a formula for m(t) in terms of the relative decay rate r.

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