Answer:
B has a smaller initial population of 500
Explanation:
Given
See attachment for complete question
Required
The bacteria with the smaller initial population
The initial population is at x = 0
For bacteria A;
when

For bacteria B, we have:

Substitute 0 for x



So; when x = 0
and

Because; 500 < 600
We can conclude that B has a smaller initial population of 500