Instructions:Select the correct answer from each drop-down menu.

Gary is testing a river water sample in his lab. Initially, there are 64 bacteria in the river water sample. The number of bacteria after 3 hours can be calculated using the expression shown below.


Use the given expression to complete the statements.


The quantity that represents the initial number of bacteria is 64 3 1.12 .

The quantity that represents the rate at which the number of bacteria is increasing is A. 0.12     B. 1.12    C. 3 12 , which means the growth rate percentage for the bacteria is A. 0.12   B. 112   C.1.12    D. 12 3 %.