Question

The number of people that belong to a certain social website is 412 and growing at a rate of 5% every month. How many members will there be in 9 months?
Enter your answer, rounded to the nearest whole number, in the box.

Answer 1

Population are always modeled by exponential growth equation given by:
f(x)=a(1+b)^t
where:
a=original number
b=rate of growth
t=time
thus
f(x)=412(1.05)^t
the population after 9 months will be:
f(9)=412(1.05)^9=639.15=639 

Answer 2

Answer:

Hello fellow k12 students! the answer I got from my test was 639.