Question

Harriet is cultivating a strain of bacteria in a petri dish. Currently, she has 103 bacteria in the dish. The bacteria divide every two hours such that the number of bacteria has doubled by the end of every second hour. How many bacteria will Harriet have in the dish at the end of 6 hours? A.1024 B.103 C.6 203 D.103 12

Answer 1

It doubles every 2 hours. 6 hours would be 3 doublings or a factor of 8.
2 * 2 * 2 =8
So, starting withh103, in 6 hours there would be 103*8 = 1,024 bacteria

Answer 2

C. 20^3 Got it right on Plato.

Bacteria would be at 8000, 20^3 equals 8000.

Explanation: