If stickers come in sheets of 100, strips of 10, and single stickers

Two lines parallel to a third line are parallel to each other. always sometimes or never

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

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?