How much does it cost to tent camp per day?

We pay said $10 a car. We only had one campsite, but put up two tents and had two cars, so $20

You pay for the campsite, regardless of what you are "living" in. If you have a state park camping pass, developed sites with no hookups are free, otherwise $10/night. Electric sites are $4 with pass, $14 without.

Not sure on the tent camping, I stayed with a travel trailer in a developed campsite without any hookups and I'm from out of state, for $10 a night.

It depends if your local or if you're out of state Locos $10 if you're out of state at 4 more to that