After some food is introduced into a petri dish containing bacteria, the number of bacteria in the dish increases rapidly.
The relationship between the elapsed time, $t$, in seconds, since the food was introduced, and the total number of bacteria, $N(t)$, is modeled by the following function:
###$N(t)=1000\cdot 8\^{\Large t}$
**Complete the following sentence about the rate of change of the bacterial culture.**
*Round your answer to two decimal places.*
The number of bacteria is doubled every [[☃ numeric-input 1]] seconds.