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9. Pollution A lake polluted by bacteria is treated with an anti- bacterial chemical. After t days, the number N of bacteria per milliliter of water is approximated by = 20 + 30

9. Pollution A lake polluted by bacteria is treated with an anti- bacterial chemical. After t days, the number N of bacteria per milliliter of water is approximated by = 20 + 30

Calculus: Early Transcendentals
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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for 1 <1< 15. a. When during this time will the number of bacteria be a minimum? b. What is the minimum number of bacteria during this time? c. When during this time will the number of bacteria be a maximum? d. What is the maximum number of bacteria during this time?
Transcribed Image Text:for 1 <1< 15. a. When during this time will the number of bacteria be a minimum? b. What is the minimum number of bacteria during this time? c. When during this time will the number of bacteria be a maximum? d. What is the maximum number of bacteria during this time?
9. Pollution A lake polluted by bacteria is treated with an anti- bacterial chemical. After t days, the number N of bacteria per milliliter of water is approximated by N(1) = 20 0( - ) + 30
Transcribed Image Text:9. Pollution A lake polluted by bacteria is treated with an anti- bacterial chemical. After t days, the number N of bacteria per milliliter of water is approximated by N(1) = 20 0( - ) + 30
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