SOLUTION: It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many species are on Earth this

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Question 76224: It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many species are on Earth this year?
Answer by scott8148(5891) About Me  (Show Source):
You can put this solution on YOUR website!
if we lose 4000 per year...and we had S last year...we have 4000 LESS this year...or S-4000