Help please! answer correctly for brainliest . ( look at picture for question and answer choices )

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.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?