For a Certain Culture the Equation $Q ( t ) = Q _ { 0 } e ^ { 0.9 t }$

question 108

Multiple Choice

For a certain culture the equation $Q ( t ) = Q _ { 0 } e ^ { 0.9 t }$ , where Q 0 is an initial number of bacteria and t is time measured in hours, yields the number of bacteria as a function of time. How long will it take 600 bacteria to increase to 3,600? Please round the answer to the nearest tenth.

• A) 2.0 hours
• B) 1.0 hours
• C) 7.0 hours
• D) 5.0 hours
• E) 4.0 hours

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