Answer:
I have not been able to answer it sorry
When multiplying fractions, multiply row by row. 5×1=5 over 3×7=21. So we get positive (becayse negatives cancel each other) 5/21. We can't simplify it any further so thats the answer. Hope this helps!
The answer is A,

Comment the correct answer.
Answer:
4,261
Step-by-step explanation:
after 23 hours, the number of bacteria =
4,000.
so, after 26 hours = 4,000+ (3/23 ×4000)
= 4,000 + 261 = 4,261