Answer
please see details in "work step by step"
Work Step by Step
Please see figure 4.24 on page 499
(the first two cases)
.
The exponential model, $y=ab^{x},$ may be one of
(i) growth, $b>1.$
In this model the pattern suggests a change in slope,
gentle at the beginning (left), and
rapid to the right of the period (as time goes on).
(ii) decay, $0
