Given that the perimeter of the equilateral triangle below is 63 , solve for x

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.

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)