Question

The function for finding the population growth of people in a certain region is f(t) = 1000(2.2)t.

Answer 1

For this case we have a function of the form:
 $y = A * (b) ^ t$
 Where,
 A: initial amount
 b: growth rate
 t: time
 In this problem we have the following function:
 $f (t) = 1000 (2.2) ^ t$
 In this case, the growth rate is given by:
 $b = 2.2$
 Answer:
 the rate of increase is:
 b = 2.2