The coordinates of three vertices of rectangle are a(1,-5),b(1,3),and c(10,3). find the coordinates of the fourth vertex. then, find the area of the rectangle.

Pranza plotted point a in the coordinate plane below.

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Which of the following represents the length of a diagonal of this trapezoid?