What is 3/4 x 2/5? is it 6/20 or 6?

Which number line represents the solution set for the inequality -1/2x> 24?

If you could answer these your a life saver

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex