One hour after a bacteria colony starts growing, a scientist determines that there are 9000 bacteria present. After another hour, there are 12,000 bacteria. How many bacteria were present initially?
One hour after a bacteria colony starts growing, a scientist determines that there are 9000 bacteria present. After another hour, there are 12,000 bacteria. How many bacteria were present initially?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:One hour after a bacteria colony starts growing, a scientist
determines that there are 9000 bacteria present. After another
hour, there are 12,000 bacteria. How many bacteria were
present initially?
A) 3850
B) 6750
C) 9000
D) 16000
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