Go back to the data and show the quotients of the outputs. The average of these quotients would represent the average growth factor. To find the average growth factor move the rate till you think the horizontal line, GrowthFactor, is in the middle of the quotients. Rate is the growth factor, s is the starting amount or y intercept at year zero.
12
13
negative 10
10
14
negative 10
50
15
equals
16
equals
17
Quadratic
18
Inflation: Converting the cost to 2013 dollars
23
27
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