What does a dot due to the value of a note or rest

Answer 1

A dot affects the value of a note or rest by increasing its duration by half. In music notation, a dot placed after a note or rest extends its duration by 50%. For example, a dotted quarter note would be worth three eighth notes, and a dotted half rest would be equivalent to a rest lasting three beats instead of two. The dot adds fractional value to the original duration of the note or rest.