Mathematics, 14.02.2020 22:54 lankfordcrystal81
The Average cost of a long distance call in the USA was 31 cents per minute in 1978 and 8 cents in 2008. Find the approximate percent decrease in cost per minute for the long distance call from 1978 to 2008
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The Average cost of a long distance call in the USA was 31 cents per minute in 1978 and 8 cents in 2...
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