Question

A cell of some bacteria divides into two cells every 40 minutes.The initial population is 3 bacteria.
(a) Find the size of the population after t hours

(function of t)
(b) Find the size of the population after 3 hours.

(c) When will the population reach 9?

Answer 1

completely wrong

Answer 2

try
\[ 3 \cdot 2^{\frac{3t}{2} }\]
where t is in hours