Need Answered Today Please Help What is the equation of the line that is perpendicular to y = one-fifth x + 4 and that passes through (5,–4)?

A- y = negative 5 x minus 29
B- y = negative 5 x + 21
C- y = one-fifth x minus 4
D- y = one-fifth x minus 5

Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.