PLEASE RESPOND ASAP Dr. Silas studies a culture of bacteria under a microscope. The function b1 (t) = 1200 (1.8)^t represents the number of bacteria t hours after Dr. Silas begins her study.

(a) What does the value 1.8 represent in this situation?
(b) The number of bacteria in a second study is modeled by the function b2 (t) = 1000 (1.8)^t.
What does the value of 1000 represent in this situation?
What does the difference of 1200 and 1000 mean between the two studies?