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A food sample contains 300 bacteria. The doubling time for bacteria left at room temperature is 20 minutes. How many minutes will it take to

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A food sample contains 300 bacteria. The doubling time for bacteria left at room temperature is 20 minutes. How many minutes will it take to reach an unsafe level of 100 000 bacteria? Solve algebraically using logarithms. Answer must be written as a decimal accurate to at least 2 decimal places. (4 marks)

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