yes it is formal because it doesnt use slang and too much puncuation the lonely planet guide does use puncuation but not too much unlike the email
Probably about as many as use neither proper spelling nor proper grammar! Your question should say 'How many people out of 10 do not use proper punctuation?'
It is not true to say that people don't use tally marks often - they do!
Punctuation is the use of symbols (such as period, comma, colon, etc.) in writing to clarify meaning and indicate pauses or emphasis. It helps organize and structure sentences to make them easier to read and understand.
It is not punctuation it is a word
The punctuation marks are ?.,'!
something that goes at the end of a text
Many people use cocoa butter to make their stretch marks disappear or at least less visible.
comma
Af5 is puncuation
Yes, a slash is a type of punctuation.
using pauses as puncuation