- #1
bigmac
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Homework Statement
- The following table gives the population of a city over time:
Homework Equations
I know this equation: y = a(b)x
and exponential growth: b = 1 + growth rate and b = 1 - decay rate
The Attempt at a Solution
I know from back in chapter 2 that first differences = linear model, second differences are the same = quadratic and if the 3rd differences are the same then its a cubic model...but that doesn't work here. I am completely stuck...how do I find the model. Any hints/tips/methods will be greatly appreciated! Thanks!