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Scientists are conducting trials on a new disinfectant for use in hospitals and doctor’s offices. After conducting several trials, they found that it decreases the presence of bacteria by 35% each second that it is applied to a surface. The next trial will apply it on a desk surface with approximately 20,000 cells of bacteria on it.

Which logarithmic function models the time, , in seconds, it will take the number of cells to decrease to a value of n?

A.

B.

C.

D.

Sagot :

Answer:

Log 0.65(n/20,000)

Step-by-step explanation:

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