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OpenStudy (anonymous):
A bacteria population starts at 2,032 and decreases at about 15% per day. After how many days will there be 321 bacteria? A. About 1.1 days B. About 0.2 days C. About 11.4 days D. About 13.2 days
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OpenStudy (kropot72):
The population change with time can be modeled by this equation: \[\large P _{t}=P _{0}(0.85)^{t}\] where Pt=321 and P0 = 2032 Now you need to plug these values into the equation, and then solve to find the value of t.
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