Quadrilateral math has vertices m=(1,3),a=(-4,6),t=(-2,7),and h=(5,9). Quadrilateral math is the image after dilating math by a scale factor of 3 about origin. what are the coordinates of A1

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.