SOLUTION: I get the general idea on how to set up the problems, but when I tried to solve it apparently it was wrong so I don't have a clue, please help thank you. The count in a bac

Question 1193863: I get the general idea on how to set up the problems, but when I tried to solve it apparently it was wrong so I don't have a clue, please help thank you.

The count in a bacteria culture was 100 after 15 minutes and 1800 after 30 minutes. Assuming the count grows exponentially,
What was the initial size of the culture?
Find the doubling period.
Find the population after 120 minutes.
When will the population reach 10000?
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
Two points for an exponential function, (15,100) and (30,1800)

Use the points:

Using the first equation

The function as
but this method may be not the best.
(Note that the initial bacteria count cannot be between two whole values.)
RELATED QUESTIONS
Larry is starting a small business and needs a loan. The bank offers Larry a $10,000... (answered by stanbon,richwmiller)

http://prntscr.com/aajkcx I've posted this before, but I think the tutor got the wrong... (answered by ikleyn)

Hey! So I was finishing up homework when yet another problem had me crying. After hours... (answered by Fombitz,ikleyn)

http://prntscr.com/aajkcx So, I know I have to setup proportions, but could someone... (answered by ikleyn)

I need help to learn how to set up equations so that I can solve it; Because I am having... (answered by rfer)

Find the 20th term of a geometric sequence whose third term is 1 and common ratio is... (answered by Boreal)

It takes Maria twice as long to complete a certain type of research project as it takes... (answered by oberobic)

Solve two-step equations. -4= a+5/-3 When I initially first tried the problem I... (answered by JulietG)

A runner�s heart rate in beats per minute is given by the formula Heart rate = 65 + 53 / (answered by ankor@dixie-net.com)