What needs motivated the invention of the cash register? clerks from embezzling money, and the need for better sales accounting
Artwork?
If you mean like what it is they make, it is their Artwork
The perspective we see things at will effect the way we view drawings. Like if we look down at something it may look smooth, but as we see from the side it may have a different texture.
For example on number 1 the time signature is 4/4 , that means there has to be 4 beats in between each bar line. They have already put in a half note which is equal to 2 beats. You can either put another half note or two quarter notes.
Remember
Whole Note = 4 beats
Quarter Note = 1 beat
Half Note = 2 beats
Dotted Half Note = 3 beats
