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a.

The number of bacteria present in a colony is 180 at 12 noon. The bacteria grows at a rate of 23% per hour.

 

How many will be present at 8pm?

 Feb 23, 2019
 #1
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steps to compelete this our  

 

1. divide the original number by 100 

2. count how many hours it's been  

3. multiply the value we got in the first step by 23 

4. then multiply that value by how many hour's it's been. and add the original value can be expressed in the equation  

y = 41.4x + 180   

 

 

1. 1.8 

2. 8 hours 

3. 41.4 

4. 511.2

 Feb 23, 2019
 #2
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N = 180 x 1.23^8

N = 180 x  5.2389094428262881

N = ~ 943 - Number of  Bacteria by 8 pm.

 Feb 23, 2019

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