A sample of bacteria taken from a river has an initial concentration of 2 million bacteria per milliliter and its concentration doubles each week. (a) Find an exponential model that calculates the concentration (in millions) after x weeks. (b) Estimate the concentration (in millions) after 1.4 weeks. (a) B(x) =| (Type an equation using x as the variable.) (b) The estimated concentration of bacteria after 1.4 weeks is (Round to the nearest integer as needed.) million per milliliter.

A sample of bacteria taken from a river has an initial concentration of 2 million bacteria per milliliter and its concentration doubles each week. (a) Find an exponential model that calculates the concentration (in millions) after x weeks. (b) Estimate the concentration (in millions) after 1.4 weeks. (a) B(x) =| (Type an equation using x as the variable.) (b) The estimated concentration of bacteria after 1.4 weeks is (Round to the nearest integer as needed.) million per milliliter.

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter4: Exponential And Logarithmic Functions

Section: Chapter Questions

Problem 11T: Suppose that $12,000 is invested in a saving account paying 5.6% interest per year. (a)Write the...

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