Question 3
Bacillus subtilis grows under ideal conditions by binary fission. Initially there are $2\times10^2$ cells per ml; after 13 hours there are $3.33\times10^9$ cells per ml. After how many minutes does the population double? Round to the nearest integer.
The following source mathematical images preserve the printed option/formula/figure variants; text and choices above or below provide clean typesetting.

The following source mathematical images preserve the printed option/formula/figure variants; text and choices above or below provide clean typesetting.
