What is the value of Left-bracket (two-thirds) Superscript 0 Baseline Right-bracket Superscript negative 3?

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.

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons