Jane paid $40 an item after she recieved a 20% discount. jane's friend says this means that the original price of the item was $48. how do you think jane's freind arrived at this amount? is her friend correct? why or why not?

He trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? ? a) 42 cm2; 27 cm2; 69 cm 2 b) 54 cm2; 27 cm2; 81 cm 2 c) 108 cm2; 27 cm2; 135 cm 2 d) 108 cm2; 13.5 cm2; 121.5 cm 2