Question

After 30 minutes, there are four cells. If the bacteria continue to reproduce at the same rate, which equation could be used to find how many bacteria formed after 120 minutes? (x is the number of bacteria formed after 120 minutes.)

Answer 1

1 to 2 to 4 in 30 mins !!

so every 15 min they becomes twice !!

eqn is : 2^n bacteria = 15n mins

so the final eqn for 120 mins is x= 2^8 bacterias = 256 !!