Dr. Jimenez found that after applying an antibiotic to bacteria, he observed only 90% of the bacteria left in the culture dish each hour. If the initial bacteria count was 100, what was the bacteria count after 5 hours? Round to the nearest whole number. There were bacteria after 5 hours.

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14 September, 10:37

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Keith Roy · Answer 1

Count = 100 (0.90) ^t where t = number of hours

after 5 hours the count will be 100 * (0.90) ^5 = 59 to nearest whole number