IMathAS-libretexts

The table below gives the data from a linear function. Find a formula for the function.

Price per shirt, $\displaystyle {p}{\left(\$\right)}$	55	60	65
Number of shirts sold, $\displaystyle {q}={f{{\left({p}\right)}}}$	2500	2300	2100

$\displaystyle {f{{\left({p}\right)}}}={4700}{p}-{40}$
$\displaystyle {f{{\left({p}\right)}}}={4700}-{0.03}{p}$

$\displaystyle {f{{\left({p}\right)}}}={4700}-{40}{p}$
$\displaystyle {f{{\left({p}\right)}}}={2500}-{200}{p}$

$\displaystyle {f{{\left({p}\right)}}}={2500}{p}-{40}$
$\displaystyle {f{{\left({p}\right)}}}={2500}-{40}{p}$