Actual sales for January through April are shown below. 
Use exponential smoothing with 
= 0.2 to calculate smoothed averages and forecast sales for May from the above data. Assume the forecast for the initial period (January) is 18. Show all of your computations.
Definitions:
Evolution of Plants
The evolution of plants describes the processes by which plant species have developed and diversified from ancestral forms over geological time periods.
Embryo
Stage of a multicellular organism that develops from a zygote before it becomes free-living; in seed plants, the embryo is part of the seed.
Vascular Tissue
Specialized tissue in plants that conducts water and nutrients through the plant body, comprising mainly of xylem and phloem.
Seed
Mature ovule that contains an embryo, with stored food enclosed in a protective coat.
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