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The following table shows a store's total sales, $\displaystyle {S}$ , of a shirt when it is priced at price $\displaystyle {p}$ ,in dollars

$\displaystyle {p}$	55	65	75	85	95	105
$\displaystyle {f{{\left({p}\right)}}}$	3488	2502.5	2047	1794.5	1218	1035.5

Use the regression capabilities of your calculator to find a regression equation for $\displaystyle {S}$ as a linear function of $\displaystyle {p}$ .

$\displaystyle {S}{\left({p}\right)}=-{49.05}{p}+{5755.62}$
$\displaystyle {S}{\left({p}\right)}=-{49.05}{p}+{3488}$

$\displaystyle {S}{\left({p}\right)}={3488}{\left({0.72}\right)}^{{p}}$
$\displaystyle {S}{\left({p}\right)}=-{46.77}{p}+{5755.62}$

$\displaystyle {S}{\left({p}\right)}={12533.84}{\left({0.98}\right)}^{{p}}$

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