The number of bacteria in a sample increased by a factor of 2 every minute from 9:05 a. m. to 9:55 a. m. The function below shows the number of bacteria in the sample f(x) after x minutes from 9:05 a. m: 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