Can u pls help me with this question

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.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?