The number of fungi on a culture has increased from 800 spores to 1,600 spores in 1 hour. What is the growth factor for this fungus?

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1
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10

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters