Question

thanks what about this a bacteria population triples in number each day if there are 2,551,500 bacteria on the seventh day how many bacteria was present the first day

Answer 1

3500

Answer 2

\[P_7=P_1*3^7\]

Answer 3

2,551,500/3 do that seven times

Answer 4

well untill u get to first day at least

Answer 5

Oops, no "on the seventh day" is six days after "on the first day" unless you say beginning of day 1 and end of day seven so it is:
\[P_7=P_13^{7-1}\]