Question

a laboratory culture contains 150 bacteria. After 20 minutes, the culture contains 300 bacteria. After one hour, the culture contains 1200 bacteria. Make a conjecture about the rate at which the bacteria increases.

Answer 1

Hmm, at t=0, we have 150. At t = 20, we have 300. At t=40, we don't know, but at t = 60 we have 1200.

150, 300, ???, 1200

see a possible pattern there? If you don't, try dividing each member of the sequence by the first value in the sequence.