Answer:
-4x=4+4
x=8/-4
x= -2
not sure how I'm supposed to verify
D = P - 2.50
D is price after coupon is used, P is price before
Brain dump....
have you ever heard the expression cave in ? when u see something (cave in) it looks like crater right?
so just like that you know to draw to crater like objects perpendicular from each other
perpendicular means <span>at an angle of 90° to a given line, plane, or surface.</span>
