I m bored anyone wanna talk​

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

Which ahows the graph of the solution set of 6x+4y< 12

Which expression is equivalent to the square root of 2 multipllied by 5 divided by 18