A bacteria population has been doubling each day for the last 5 days. It is currently 100,000. What was the bacterial population 5 days ago?

Day 5 = 100,000
100,000/2 = 50,000
Day 4 = 50,000
50,000/2 = 25,000
Day 3 = 25,000
25,000/2 = 12,500
Day 2 = 12,500
12,500/2 = 6,250
Day 1 = 6,250
6,250/2 = 3,125
Day 0 = 3,125

If i'm correct the answer is $15.97

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?