5-22 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

=0.30,

develop forecasts for years 2 through 6.

5-23 Using smoothing constants of 0.6 and 0.9, develop forecasts for the sales of Cool-Man air conditioners (see Problem 5-22).