Eighty less than three times a number?

What is 1/2 x (6 x 4)+3 + 2 show your work

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.

98 point question what is the record for most points in one