Answer: There are 2.25×10³⁴ bacteria at the end of 24 hours.
Step-by-step explanation:
Since we have given that
Number of bacteria initially = 1
It triples in number every 20 minutes.
So, 
So, our equation becomes

We need to find the number of bacteria that it will contain at the end of 24 hours.
So, it becomes,

Hence, there are 2.25×10³⁴ bacteria at the end of 24 hours.
Answer:
second to the longest one is right
Step-by-step explanation:
Answer:
a) y = n – 0.26n
Step-by-step explanation:
a) y = n – 0.26n
Perimeter of base x height. So, (3+4+5)x6. 12x6=72. 72 is the surface area.