Posted by **Lacey** on Sunday, November 2, 2008 at 8:54pm.

I just have one more question.

I need to find the equation for the following word problem: a group of yeasts cells grows by 75% every 3 hours. At 9 a.m., there are 200 yeast cells.

Write an equation that models the number of yeast cells after 9 a.m.

So far I've worked out that C=200(1.75)^ , but my book says that it should be ^t/3, I suppose the /3 refers to the 'every three hours' bit, but, I don't understand why. Can someone please help me understand this?

- Math - last one -
**bobpursley**, Sunday, November 2, 2008 at 9:02pm
the rate is 1.74 each three hours. THe way you write it then, giving t in hours, is just t/3. At t=3hrs, it give you

200*(1.75)^(3/3) or 200*1.75

- Math - last one -
**Lacey**, Sunday, November 2, 2008 at 10:07pm
yes, but why is it t/3?

## Answer This Question

## Related Questions

- science - what are cells made from? Please, what kind of cells? There are many ...
- math - suppose that one bacterial cell divides every 30 minutes to make 2 cells...
- Science - Question 1- how does a multicellular organism develop? A- the cells ...
- Math- Geometric solutions and problems RIA - A. -x^3 and x^11 ; 3 B. 0.6 and -0....
- I NEED HELP ASAP WITH SCIENCE PLEASE IT'S IMPORTAN - Since fermentation occus in...
- I really need help in science please anyone thanks - Since fermentation occurs ...
- Calculus 1 - The number of yeast cells in a laboratory culture increases rapidly...
- biology - which of the following types of cells need to make energy to perform ...
- Calc - A common inhabitant of human intestines is the bacterium Escherichia coli...
- Bio - A biologist was experimenting with a corn plant that had previously ...

More Related Questions