IMathAS-libretexts

A stores total sales, $\displaystyle {S}$ , of a shirt when it is priced at price $\displaystyle {p}$ , in dollars, is given by the function $\displaystyle {S}=-{5}{p}+{39.3}$ . Which of the following is the best interpretation of the slope of this function?

The sales are increasing by 39.3 dollars per year
The sales are decreasing by 5 shirts per year
The sales are decreasing by 5 dollars per year
The sales are decreasing by 5 dollars per shirt
The sales are decreasing by 5 shirts per dollar
The sales are increasing by 39.3 shirts minus 5 dollars per shirt.

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