Answer: 10,000 Total After 19 Hours
Explanation:
What I did was I figured out how much bacyeria their was after 8 hours which was 400. Since it was 400 what I did was I took the 400 in 2,4000 after 8hours and multiplied 400 by 19 and got the answer 10,000 for the total amount of bacteria after 19 hours.