Question

A colony of bacteria is growing exponentially according to the function below, where t is in hours. What will the approximate number of bacteria be after 7 hours?A.270B.1082C.635,818D.45,674

Answer 1

we have the exponential function

`B(t)=4e^(0.8t)`

For t=7 hours

substitute

`\begin{gathered} B(t)=4e^(0.8*7) \\ \\ B(t)=1,082\text{ bacteria} \end{gathered}`

The answer is option B