Because of the increasingly important role played by coal as a viable alternative energy source, the production of coal has been growing at the rate of
billion metric tons/year t years from 1970 (which corresponds to t = 0).Had it not been for the energy crisis, the rate of production of coal since 1970 might have been only
billion metric tons/year t years from 1970.Determine how much additional coal was produced between 1970 and the end of the century as an alternate energy source.Round your answer to one decimal place.
__________ billion metric tons
Correct Answer:
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