i think i got the answer for question 2.
since
The count in a bacteria culture was 200 after 20 minutes and 1600 after 35 minutes.
1)What was the initial size of the culture?
2)Find the doubling period in minutes ?
3)Find the population after 115 minutes ?
I was able to solve for number 1, and go it to be 12.4999. I need help setting up the equation for question 2.
ok, so we know we are going to use the exponential growth formula, it goes like this.
we have that A(20) = 200
we also have A(35) = 1600
Let's divide these two equations...
So we are working with
Let's use one of the above equations to solve for
weird number, check my computation
we want to find such that we have double the bacteria.2)Find the doubling period in minutes ?
we can simply solve
do you see why? you don't have problems solving that do you?
oh, i think that's what you did, so i guess you know why
Just solve
3)Find the population after 115 minutes ?