The count in a bacteria culture was 900 after 15 minutes and 1300 after 30 minutes. Assuming the count grows exponentially. You may enter the exact value or round to 2 decimal places. What was the initial size of the culture?  Find the doubling period.   Find the population after 85 minutes.  When will the population reach 12000.

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
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Chapter5: Exponential And Logarithmic Functions
Section5.5: Exponential And Logarithmic Models
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The count in a bacteria culture was 900 after 15 minutes and 1300 after 30 minutes. Assuming the count grows exponentially. You may enter the exact value or round to 2 decimal places.

What was the initial size of the culture? 

Find the doubling period.  

Find the population after 85 minutes. 

When will the population reach 12000.   

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