I’m not sure what this question is asking or how to solve, please help asap

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.

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Which measure is equivalent to 110 ml? 0.0110 l 0.110 l 1.10 l 11,000 l