Using excel to help predicting and find future values based on historical data is one of valuable features.

Required:

1- Provide a numerical example for contains actual historical 12 months sales data (number of units and sales values), and use (GROWTH, TREND, FORECAST) functions for prediction the expected coming 12 months number of units to be sold and the expected sales value in dollar based on actual number of units sold.

2- Explain the difference between GROWTH, TREND, and FORECAST functions