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Mathematics 8 Online
OpenStudy (anonymous):

how do i solve this?

OpenStudy (anonymous):

The number of bacteria in a sample increased by a factor of 2 every minute from 9:05 AM to 9:55 AM. The function below shows the number of bacteria in the sample f(x) after x minutes from 9:05 AM: f(x) = 10(2)x Which of the following is a reasonable domain for the function? 0 ≤ x ≤ 10 5 ≤ x ≤ 55 0 ≤ x ≤ 50 All positive integers

OpenStudy (anonymous):

the x in the formula is an exponent

OpenStudy (anonymous):

so it is f(x) = 10(2)^x

OpenStudy (anonymous):

@Abhisar @Luigi0210 @Loser66 @AravindG

OpenStudy (kendricklamar2014):

The function below shows the number of bacteria in the sample f(x) after x minutes from 9:05 AM Domain is the x values that you can use. What is the smallest number of minutes from 9:05 AM??

OpenStudy (anonymous):

from 9:05 to?

OpenStudy (kendricklamar2014):

What I wanted to show you is, we don't wait any time at all. So \[x = 0\]

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

so now I am thinking it's a

OpenStudy (kendricklamar2014):

Now, the next thing you need to know is the last x number. The question says: From 9:05 - 9:55 A.M. How many minutes is 9:55 from 9:05??

OpenStudy (anonymous):

50

OpenStudy (kendricklamar2014):

Yes, so the smallest x = 0 and the biggest x = 50. Which choice shows: x from 0 - 50 @KaylaIsBae

OpenStudy (anonymous):

C

OpenStudy (kendricklamar2014):

Yes, so the answer is: \[0\le x \le 50 \]

OpenStudy (anonymous):

thanks :)

OpenStudy (kendricklamar2014):

\[Welcome:)\]

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