Question

A certain type of bacteria doubles every 4 hours. If you started with 37 bacteria, how many would you have after 12 hours?

Answer 1

y=a * b^x

a=original number

b=rate of increase

x=time

There are 3 four hour periods in 12 hours (12/4=3)

a=37

b=2

x=3

37x2^3

37x8

296

Answer 2

85 bacteria

Explanation:

y=4x+37

4(12)+37 = 85 bacteria