Solve the system of equations.

3x+5y=9
3x+2y=3

Can someone me out here and the tell me the greatest common factor

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?