A culture of a certain bacteria doubles every hour. At 9:00 a.m, there were already 120 bacteria. Which equation represents the number of bacteria, n, at 8:00 a.m? How many bacteria were there?(1 point)%0D%0AResponses%0D%0A%0D%0An2=120; at 8:00 a.m., there were 60 bacteria.%0D%0A Start Fraction n over 2 End Fraction equals 120 ; at 8:00 a.m., there were 60 bacteria.%0D%0A%0D%0A2n=120; at 8:00 a.m., there were 240 bacteria.%0D%0A 2 n equals 120 ; at 8:00 a.m., there were 240 bacteria.%0D%0A%0D%0An2=120; at 8:00 a.m., there were 240 bacteria.%0D%0AStart Fraction n over 2 End Fraction equals 120 ; at 8:00 a.m., there were 240 bacteria.%0D%0A%0D%0A2n=120; at 8:00 a.m., there were 60 bacteria.

Answer 1

The correct equation that represents the number of bacteria, n, at 8:00 a.m is:

n/2 = 120

This equation represents that at 8:00 a.m, the number of bacteria (n) is half of the initial number at 9:00 a.m (120).

Therefore, there were 60 bacteria at 8:00 a.m.