Question

A bacteria culture begins with 4 bacteria which double in size every hour. How many bacteria exist in the culture after 8 hours?

Answer 1

1024 bacteria exists after 8 hours.
(initial num of bacteria) × 2^(num of hours)

Answer 2

We can make an equation from the given statement above for the number of bacteria that grows at the end of every unit of time. It has been said that  in every the bacteria double the amount.

Number of bacteria = 4x 2^t

where t is the number of hours.

Number of bacteria = 4x 2^(8)
Number of bacteria =  1024