What is defined as the first step to drawing an angle with protractor?

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.

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

Why do interests rates on loans to be lower in a weak economy than in a strong one