Is 4.8 a repeated decimal? answer this asap! i don't understand

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.

Joey is asked to name a quadrilateral that is also a rhombus and has 2 pairs of parallel sides.should be his answer

Interpret the following expression (5y^2-7)^3/(2y)^2