Write an experecion for the calculation divided by 5 added to 11

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.

Which number line represents the solution set for the inequality - x 24?

What function has a range {yly< 5}? question on picture above^