What is the answer and the steps -6+(x)/(4)=-5

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.

What are the solutions of the following system? y=-2x^2 y=x-2

Three consecutive integers have a sum of 234. what are the three integers