M
the number of users of a cell tower in a small, developing town increased by a factor of 1.5 every year from 2010 to 2019. the function below shows the number of cell tower users, f(x), after x years from the year 2010:
f(x) = 5,000(1.5)x
which of the following is a reasonable domain for the function?
a 2,010 ≤ x ≤ 2,019
b0 ≤ x ≤ 5,000
c 0 ≤ x ≤ 9
d all positive integers