A Petri dish contained 50 bacteria at 8:00am the number of bacteria triples each hour. After what time will there be at least 1,350 bacteria in the Petri dish?

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asked Jan 16, 2017 222k views

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Tastybytes · Answer 1 · 2017-01-21T12:33:48+0000

There will be at least 1,350 bacteria in the Petri dish in 3 hours, or at 11:00am.
8:00am: 50 bacteria
9:00am: 150 bacteria
10:00am: 450 bacteria
11:00am: 1350 bacteria

A Petri dish contained 50 bacteria at 8:00am the number of bacteria triples each hour. After what time will there be at least 1,350 bacteria in the Petri dish?

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