Sales of Cool-Man air conditioners have grown steadily during the past 5 years:

YEAR SALES

1 ...........450

2 ...........495

3 ...........518

4 ...........563

5 ...........584

6 ........... ?

The sales manager had predicted, before the business started, that year 1’s sales would be 410 air conditioners. Using exponential smoothing with a weight of ɑ = 0.30, develop forecasts for years 2 through 6.