What about Rubocop rules?

The first offence I don’t get. this shebang is the proper syntax and my .rb script executes.

The second one, again, I don’t get it, this shebang is correct. what is the offence ?

The next three are similar. should I make the change ? in the Ruby course here on Codacademy double quotes are used. is there a config file one can edit for Rubocop ?