How often does the line y=1 intersect the​ graph?

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.

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

How to simply and write the answer n a whole number