My key broke in half it was in my pant pocket where can i get another one

You're going to have to call a lock shop for that one. It should only be a few bucks, as I recall Mazda wasn't using transponder keys for your model year. They might be able to cut a new one off of your broken one, or a spare if you have one. Otherwise, you can see if the dealer will cut a key from your VIN (bring your registration for proof of ownership) but that's likely a good bit more expensive.