Can someone me on this easy math question? (25 points+brainliest)

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

Free points also plz look my profile and answer really stuff