Mathematics, 29.01.2020 13:48 fanta47

In 1950 the use of coal in the us was 114.6 million tons. the use of coal has decreased by 6.6% per year since then. estimate the amount of coal used in the us in 2010.

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In 1950 the use of coal in the us was 114.6 million tons. the use of coal has decreased by 6.6% per...