A laboratory culture contains 150 bacteria. After twenty minutes, the culture contains 300 bacteria. After one hour, the culture contains 1200 bacteria. Make a conjecture about the rate at which the bacteria grow.
a.The number of bacteria quadruples every 20 minutes.
b.The number of bacteria doubles every 20 minutes.
c.The number of bacteria doubles every 40 minutes.

Question

A laboratory culture contains 150 bacteria. After twenty minutes, the culture contains 300 bacteria. After one hour, the culture contains 1200 bacteria. Make a conjecture about the rate at which the bacteria grow.
a.The number of bacteria quadruples every 20 minutes.
b.The number of bacteria doubles every 20 minutes.
c.The number of bacteria doubles every 40 minutes.

anonymous · Answer

b the number of bacteria double every 20 minutes

anonymous · Answer

because it went from 150 to 300 in 20 minutes, effectively doubling the # of bacteria in 20 minutes