The equation that represents the number of bacteria, n, at 8:00 am is:
n/2 = 120
To find how many bacteria were there at 8:00 am, we need to solve this equation for n:
Multiply both sides of the equation by 2:
2 * (n/2) = 120 * 2
n = 240
Therefore, the correct answer is:
C. n/2=120; 8:00 am there were 240 bacteria
A culture of a certain bacteria doubles every hours. At 9:00 am there were already 120 bacteria. Which equation represents the number of bacteria ,n , at 8:00 am. How many bacteria were there.
A. 2n=120; 8:00 am there were 240 bacteria
B. n/2=120; 8:00 am there were 60 bacteria
C. n/2=120; 8:00 am there were 240 bacteria
D. 2n=120; 8:00 am there were 60 bacteria
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