A population of Escherichia coli is growing exponentially in…

A population of Escherichia coli is growing exponentially in a petri dish. How many individuals would be present after the time indicated given the following information? Initial population size (No) = a = 5 bacteria Time elapsed since initial population size (t) = 100 min Doubling time for E. coli (td) = 20 min Population size at the end of time, t (Nt) = ?