The count in a bacteria culture was 500 after 15 minutes and 1400 after 35 minutes. Assuming the count grows exponentially, What was the initial size of the culture?

Find the doubling period.

Find the population after 115 minutes.

When will the population reach 13000.

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm

The range would be 13 because you’re finding the difference