Question 1072028
A) The exponential model you are looking for would be: n(t)=n&#8320;*2^(t/5),where t is the number of hours after the first 25 bacterium were counted.

B)n=n&#8320; * 2^(18/5)=25 * 12.125732=303.1433

C) 2000000=25 * 2^(n/5)
2^(n/5)=80000
n/5=16.2877123795
n=81.4385618977 hours until there a 2 million bacterium. &#9786;&#9786;&#9786;&#9786;