Find the domain and range of the function 
Definitions:
Forecasting
The process of making predictions of the future based on past and present data.
Indicators
Measures or signals used to assess current conditions or to forecast financial or economic trends.
Indexes
Statistical composite measures that track changes in economic conditions or markets, made up of selected data points from various sources.
Forecasting
The process of making predictions about future events based on historical and current data.
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