Saturday

September 20, 2014

September 20, 2014

Posted by **Anonymous** on Friday, December 28, 2012 at 6:41am.

- maths --plse help me.. -
**Reiny**, Friday, December 28, 2012 at 8:34amUse

amount = a e^(kt) where a is the initial value, k is a constant, and t is in hours

1200 = 600 e^(k(4)

2 = e^(4k)

4k = ln 2

k = ln2 /4

amount = 600 e^((ln2/4)t)

when t=8

amount = 600 e^(2ln2)

= 2400

well, duh

Since the doubling period seems to be 4 hours

in 8 hours they would have doubled twice

600 --> 1200 --> 2400

**Answer this Question**

**Related Questions**

CALCULUS - a bacteria culture grows with a constant per capita growth rate. ...

math - A bacteria culture starts with 260 bacteria and grows at a rate ...

Calc - The number of bacteria in a culture is increasing according to the law of...

Calculus - A bacteria culture contains 200 cells initially and grows at a rate ...

algebra - neil was growin a culture of a bacteria for biology experiement. he ...

algebra - neil was growing a culture of bacteria for a biology experiment. he ...

MATH :) - 3. In Biology, it is found that the bacteria in a certain culture ...

Math - I need some help. A biologist finds that the population of a certian type...

Precalculus - NEED HELP ASAP PLEASE!! A bacteria culture starts with 2000 ...

calculus - The count in a bacteria culture was 600 after 10 minutes and 1100 ...