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A Business's total sales,

\displaystyle {S}

, of a sweater when it is priced at price

\displaystyle {p}

, in dollars, is given by the function

\displaystyle {S}=-{6}{p}+{38.61}

.

Which is the best interpretation of the slope for this situation?

Sales are decreasing by 6 dollars
Sales are decreasing by 6 dollars per month.
Sales are decreasing by 6 sweaters per dollar.
Sales are decreasing by 6 months per sweater.
Sales are decreasing by 6 sweaters per month.
Sales are increasing by $38.61
Sales are decreasing by 6 dollars per sweater.

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